 # Factors of 805: Prime Factorization, Methods, and Examples

There are 8 such numbers on the number line that leaves zero as the remainder when 805 is divided by them. These numbers are called the factor of 805. The smallest factor of 805 is 1, whereas, the largest factor is 805 itself. The smallest prime factor of 805 is 5. The prime factor is the factor of a number that cannot be further divided i.e. it has only two factors.

### Factors of 805

Here are the factors of number 805.

Factors of 805: 1, 5, 7, 23, 35, 115, 161, and 805

### Negative Factors of 805

The negative factors of 805 are similar to its positive aspects, just with a negative sign.

Negative Factors of 805: -1, -5, -7, -23, -35, -115, -161, and -805

### Prime Factorization of 805

The prime factorization of 805 is the way of expressing its prime factors in the product form. Prime Factorization: 5 x 7 x 23

In this article, we will learn about the factors of 805 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

## What Are the Factors of 805?

The factors of 805 are 1, 5, 7, 23, 35, 115, 161, and 805. These numbers are the factors as they do not leave any remainder when divided by 805.

The factors of 805 are classified as prime numbers and composite numbers. The prime factors of the number 805 can be determined using the prime factorization technique.

## How To Find the Factors of 805?

You can find the factors of 805 by using the rules of divisibility. The divisibility rule states that any number, when divided by any other natural number, is said to be divisible by the number if the quotient is the whole number and the resulting remainder is zero.

To find the factors of 805, create a list containing the numbers that are exactly divisible by 805 with zero remainders. One important thing to note is that 1 and 805 are the 805’s factors as every natural number has 1 and the number itself as its factor.

1 is also called the universal factor of every number. The factors of 805 are determined as follows:

$\dfrac{805}{1} = 805$

$\dfrac{805}{5} = 161$

$\dfrac{805}{7} = 115$

$\dfrac{805}{23} = 35$

$\dfrac{805}{35} = 23$

$\dfrac{805}{115} = 7$

$\dfrac{805}{161} = 5$

$\dfrac{805}{805} = 1$

Therefore, 1, 5, 7, 23, 35, 115, 161, and 805 are the factors of 805.

### Total Number of Factors of 805

For 805, there are 8 positive factors and 8 negative ones. So in total, there are 16 factors of 805.

To find the total number of factors of the given number, follow the procedure mentioned below:

1. Find the factorization/prime factorization of the given number.
2. Demonstrate the prime factorization of the number in the form of exponent form.
3. Add 1 to each of the exponents of the prime factor.
4. Now, multiply the resulting exponents together. This obtained product is equivalent to the total number of factors of the given number.

By following this procedure, the total number of factors of 805 is given as:

Factorization of 805 is 1 x 5 x 7 x 23.

The exponent of 1, 5, 7, and 23 is 1.

Adding 1 to each and multiplying them together results in 16.

Therefore, the total number of factors of 805 is 16. 8 are positive, and 8 factors are negative.

### Important Notes

Here are some essential points that must be considered while finding the factors of any given number:

• The factor of any given number must be a whole number.
• The factors of the number cannot be in the form of decimals or fractions.
• Factors can be positive as well as negative.
• Negative factors are the additive inverse of the positive factors of a given number.
• The factor of a number cannot be greater than that number.
• Every even number has 2 as its prime factor, the smallest prime factor.

## Factors of 805 by Prime Factorization

The number 805 is a composite number. Prime factorization is a valuable technique for finding the number’s prime factors and expressing the number as the product of its prime factors.

Before finding the factors of 805 using prime factorization, let us find out what prime factors are. Prime factors are the factors of any given number that are only divisible by 1 and themselves.

To start the prime factorization of 805, start dividing by its most minor prime factor. First, determine that the given number is either even or odd. If it is an even number, then 2 will be the smallest prime factor.

Continue splitting the quotient obtained until 1 is received as the quotient. The prime factorization of 805 can be expressed as:

805 = 5 x 7 x 23

## Factors of 805 in Pairs

The factor pairs are the duplet of numbers that, when multiplied together, result in the factorized number. Factor pairs can be more than one depending on the total number of factors given. For 805, the factor pairs can be found as:

1 x 805 = 805

5 x 161 = 805

7 x 115 = 805

23 x 35 = 805

The possible factor pairs of 805 are given as (1, 805), (5, 161), (7, 115), and (23, 35).

All these numbers in pairs, when multiplied, give 805 as the product.

The negative factor pairs of 805 are given as:

-1 x -805 = 805

-5 x -161 = 805

-7 x -115 = 805

-23 x -35 = 805

It is important to note that in negative factor pairs, the minus sign has been multiplied by the minus sign, due to which the resulting product is the original positive number. Therefore, -1, -5, -7, -23, -35, -115, -161, and -805 are called negative factors of 805.

The list of all the factors of 805, including positive as well as negative numbers, is given below.

Factor list of 805: 1, -1, 5, -5, 7, -7, 23, -23, 35, -35, 115, -115, 161, -161, 805, and -805

## Factors of 805 Solved Examples

To better understand the concept of factors, let’s solve some examples.

### Example 1

How many factors of 805 are there?

### Solution

The total number of Factors of 805 is 8.

Factors of 805 are 1, 5, 7, 23, 35, 115, 161, and 805 .

### Example 2

Find the factors of 805 using prime factorization.

### Solution

The prime factorization of 805 is given as:

805 $\div$ 5 = 161

161 $\div$ 7 = 23

23 $\div$ 23 = 1

So the prime factorization of 805 can be written as:

5 x 7 x 23 = 805