Factors of 657: Prime Factorization, Methods, and Examples

The factors of 657 are the numbers that divide 657 evenly. There are six factors of 657. The number 657 is called a composite number because it has more than two factors. 

Factors Of 657

The factors of the number can be found using the division method and prime factorization. 

Factors of 657

Here are the factors of number 657.

Factors of 657: 1, 3, 9, 73, 219, and 657

Negative Factors of 657

The negative factors of 657 are similar to their positive aspects, just with a negative sign.

Negative Factors of 657: –1, -3, -9, -73, -219, and -657 

Prime Factorization of 657

The prime factorization of 657 is the way of expressing its prime factors in the product form.

Prime Factorization: 3 x 3 x 73

In this article, we will learn about the factors of 657 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 657?

The factors of 657 are 1, 3, 9, 73, 219, and 657. These numbers are the factors as they do not leave any remainder when divided by 657.

The factors of 657 are classified as prime numbers and composite numbers. The prime factors of the number 657 can be determined using the prime factorization technique.

How To Find the Factors of 657?

You can find the factors of 657 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 657, create a list containing the numbers that are exactly divisible by 657 with zero remainders. One important thing to note is that 1 and 657 are 657’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 657 are determined as follows:

\[\dfrac{657}{1} = 657\]

\[\dfrac{657}{3} = 219\]

\[\dfrac{657}{9} = 73\]

Therefore, 1, 3, 9, 73, 219, and 657 are the factors of 657.

Total Number of Factors of 657

For 657, there are six positive factors and six negative ones. So in total, there are twelve factors of 657. 

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 657 is given as:

Factorization of 657 is 1 x 3$^2$ x 73.

The exponent of 1 and 73 is 1. The exponent of 3 is 2.

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

Therefore, the total number of factors of 657 is 12. Six are positive, and six 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 657 by Prime Factorization

The number 657 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 657

Before finding the factors of 657 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 657, 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 657 can be expressed as:

657 = 3 x 3 x 73

Factors of 657 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 657 in Pairs

For 657, the factor pairs can be found as:

1 x 657 = 657

3 x 219 = 657 

9 x 73 = 657 

The possible factor pairs of 657 are given as (1, 657), (3, 219), and (9, 73).

All these numbers in pairs, when multiplied, give 657 as the product.

The negative factor pairs of 657 are given as:

-1 x -657 = 657

-3 x -219 = 657 

-9 x -73 = 657 

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, -3, -9, -73, -219, and -657 are called negative factors of 675.

The list of all the factors of 657, including positive as well as negative numbers, is given below.

Factor list of 657: 1, 1, 3, -3, 9, -9, 73, -73, 219, -219, 657, and -657 

Factors of 657 Solved Examples

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

Example 1

How many factors of 657 are there?


The total number of Factors of 657 is six.

Factors of 657 are 1, 3, 9, 73, 219, and 657.

Example 2

Find the factors of 657 using prime factorization.


The prime factorization of 657 is given as:

657 $\div$ 3 = 219

219 $\div$ 3 = 73

73 $\div$ 73 = 1 

So the prime factorization of 73 can be written as:

3 x 3 x 73 = 657

Factors of 656|Factors List| Factors of 658