Factors of 505: Prime Factorization, Methods, and Examples

There are four positive factors of the number 505 those are 1, 5, 101, and 505 which when used as a divisor with 505 as a dividend then it gives zero residues with the whole number quotient. 

Factors Of 505

This shows these are factors of 505 as it has more than two factors thus it means it is a composite number.

Factors of 505

Here are the factors of number 505.

Factors of 505: 1, 5, 101, and 505

Negative Factors of 505

The negative factors of 505 are similar to its positive aspects, just with a negative sign.

Negative Factors of 505: -1, -5, -101, and -505

Prime Factorization of 505

The prime factorization of 505 is the way of expressing its prime factors in the product form.

Prime Factorization: 5 x 101

In this article, we will learn about the factors of 505 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 505?

The factors of 505 are 1, 5, 101, and 505. These numbers are the factors as they do not leave any remainder when divided by 505.

The factors of 505 are classified as prime numbers and composite numbers. The prime factors of the number 505 can be determined using the prime factorization technique.

How To Find the Factors of 505?

You can find the factors of 505 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 505, create a list containing the numbers that are exactly divisible by 505 with zero remainders. One important thing to note is that 1 and 505 are the 505’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 505 are determined as follows:

\[\dfrac{505}{1} = 505\]

\[\dfrac{505}{5} = 101\]

\[\dfrac{505}{101} = 5\]

\[\dfrac{505}{505} = 1\]

Therefore, 1, 5, 101, and 505 are the factors of 505.

Total Number of Factors of 505

For 505, there are 4 positive factors and 4 negative ones. So in total, there are 8 factors of 505. 

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 505 is given as:

Factorization of 505 is 5 x 101.

The exponent of 1, 5, and 101 is 1.

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

Therefore, the total number of factors of 505 is 8 whereas four are positive, and four 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 505 by Prime Factorization

The number 505 is a composite. 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 505

Before finding the factors of 505 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 505, 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 505 can be expressed as:

505 = 5 x 101

Factors of 505 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 505 in Pairs

For 505, the factor pairs can be found as:

1 x 505 = 505

5 x 101 = 505

The possible factor pairs of 505 are given as (1, 505) and (5, 101).

All these numbers in pairs, when multiplied, give 505 as the product.

The negative factor pairs of 505 are given as:

-1 x -505 = 505

-5 x -101 = 505

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, -101, and -505 are called negative factors of 505.

The list of all the factors of 505, including positive as well as negative numbers, is given below.

Factor list of 505: 1, -1, 5, -5, 101, -101, 505, and -505

Factors of 505 Solved Examples

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

Example 1

How many factors of 505 are there?


The total number of Factors of 505 is 4.

Factors of 505 are 1, 5, 101, and 505.

Example 2

Find the factors of 505 using prime factorization.


The prime factorization of 505 is given as:

505 $\div$ 101 = 5 

5 $\div$ 5 = 1 

So the prime factorization of 505 can be written as:

5 x 101 = 505

Factors of 504|Factors List| Factors of 506