Factors of 731: Prime Factorization, Methods, and Examples

In this solution, we see factors of 731 where the number 731 is an odd composite number having four positive as well as four negative factors. 

Factors Of 731

So in total, it has eight factors.

Factors of 731

Here are the factors of number 731.

Factors of 731: 1, 17, 43, and 731

Negative Factors of 731

The negative factors of 731 are similar to their positive aspects, just with a negative sign.

Negative Factors of 731: -1, -17, -43, and -731

Prime Factorization of 631

The prime factorization of 731 is the way of expressing its prime factors in the product form.

Prime factorization of seven hundred and thirty one

Prime Factorization: 17 x 43

In this article, we will learn about the factors of 731 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 631?

The factors of 731 are 1, 17, 43, and 731. These numbers are the factors as they do not leave any remainder when divided by 731.

The factors of 731 are classified as prime numbers and composite numbers. The prime factors of the number 731 can be determined using the prime factorization technique.

How To Find the Factors of 731?

You can find the factors of 731 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 731, create a list containing the numbers that are exactly divisible by 731 with zero remainders. One important thing to note is that 1 and 731 are the 731’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 731 are determined as follows:

\[\dfrac{731}{1} = 731\]

\[\dfrac{731}{17} = 43\]

\[\dfrac{731}{43} = 17\]

\[\dfrac{731}{731} = 1\]

Therefore, 1, 17, 43, and 731 are the factors of 731.

Total Number of Factors of 731

For 731, there are four positive factors and four negative ones. So in total, there are eight factors of 731. 

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 731 is given as:

Factorization of 731 is 17 x 43.

The exponent of 17 and 43 is 1,1.

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

Therefore, the total number of factors of 731 is eight. 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 731 by Prime Factorization

The number 731 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.

Before finding the factors of 731 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 731, 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 731 can be expressed as:

731 = 17 x 43

Factors of 731 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.

Pairs of seven hundred and thirty one

For 731, the factor pairs can be found as:

1 x 731 = 731

17 x 43 = 731 

The possible factor pairs of 731 are given as (1, 731) and (17, 43).

All these numbers in pairs, when multiplied, give 731 as the product.

The negative factor pairs of 731 are given as:

-1 x -731 = 731

-17 x -43 = 731

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, -17, -43, and -731 are called negative factors of 731.

The list of all the factors of 731, including positive as well as negative numbers, is given below.

Factor list of 731: 1, -1, 17, -17, 43, -43, 731, and -731

Factors of 731 Solved Examples

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

Example 1

How many factors of 731 are there?


The total number of Factors of 731 is 4.

Factors of 731 are 1, 17, 43, and 731.

Example 2

Find the factors of 731 using prime factorization.


The prime factorization of 731 is given as:

731 $\div$ 43 = 17 

17 $\div$ 17 = 1 

So the prime factorization of 731 can be written as:

17 x 43 = 731

Factors of 730|Factors List| Factors of 732