Factors of 817: Prime Factorization, Methods, and Examples

817 is a positive composite number having 4 factors. Factors of a number can be positive or negative. By four factors we mean that 817 has four positive and four negative factors.

Factors Of 817

Be it a positive factor or a negative factor the number is the same there is just a difference in sign.

Factors of 817

Here are the factors of number 817.

Factors of 817: 1, 19, 43, and 817

Negative Factors of 817

The negative factors of 817 are similar to its positive aspects, just with a negative sign.

Negative Factors of 817: – 1, -19, -43, and -817

Prime Factorization of 817

The prime factorization of 817 is the way of expressing its prime factors in the product form.

Prime Factorization: 19 x 43

In this article, we will learn about the factors of  817 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 817?

The factors of 817 are 1, 19, 43, and 817. These numbers are the factors as they do not leave any remainder when divided by 817.

The factors of 817 are classified as prime numbers and composite numbers. The prime factors of the number 817 can be determined using the prime factorization technique.

How To Find the Factors of 817?

You can find the factors of 817 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 817, create a list containing the numbers that are exactly divisible by 817 with zero remainders. One important thing to note is that 1 and 817 are the 817’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 817 are determined as follows:

\[\dfrac{817}{1} = 817\]

\[\dfrac{817}{19} = 43\]

\[\dfrac{817}{43} = 19\]

\[\dfrac{817}{817} = 1\]

Therefore, 1, 19, 43, and 817 are the factors of 817.

Total Number of Factors of 817

For 817, there are 4 positive factors and 4 negative ones. So in total, there are 8 factors of 817.

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 817 is given as:

Factorization of 817 is 1 x 19 x 43.

The exponent of 1, 19, and 43 is 817.

Adding 1 to each and multiplying them together results in 8.

Therefore, the total number of factors of 817 is m. 4 are positive, and 4 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 817 by Prime Factorization

The number 817 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.

Prime Factorization of 817

Before finding the factors of 817 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 817, 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 817 can be expressed as:

817 = 19 x 43

Factors of 817 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.

Factors of 817 in Pairs 2

For 817, the factor pairs can be found as:

1 x 817 = 817

19 x 43 = 817 

The possible factor pairs of 817 are given as (1, 817) and (19, 43).

All these numbers in pairs, when multiplied, give 817 as the product.

The negative factor pairs of 817 are given as:

-1 x -817 = 817 

-19 x -43 = 817

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, -19, -43, and -817 are called negative factors of 817.

The list of all the factors of 817, including positive as well as negative numbers, is given below.

Factor list of 817: 1, -1, 19, 19, 43, -43, 817, and -817

Factors of 817 Solved Examples

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

Example 1

How many factors of 817 are there?


The total number of Factors of 817 is 4.

Factors of 817 are 1, 19, 43, and 817.

Example 2

Find the factors of 827 using prime factorization.


The prime factorization of 827 is given as:

817 $\div$ 19 = 43 

43 $\div$ 43 = 1 

So the prime factorization of 817 can be written as:

19 x 43 = 817

Factors of 816|Factors List| Factors of 818