Factors of 181: Prime Factorization, Methods, and Examples

The factors of 181 can be defined as the group of natural numbers that wholly divide the number 181. The number 181 is a prime number which is why it has only two factors. 

Factors Of 181

The factors of the given number can be positive as well as negative provided that the given number is achieved upon multiplication of two-factor integers.

Factors of 181

Here are the factors of number 181.

Factors of 181: 1, 181

Negative Factors of 181

The negative factors of 181 are similar to its positive factors, just with a negative sign.

Negative Factors of 181: -1, -181

Prime Factorization of 181

The prime factorization of 181 is the way of expressing its prime factors in the product form.

Prime Factorization: 1 x 181

In this article, we will learn about the factors of 181 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 181?

The factors of 181 are 1 and 181. All of these numbers are the factors as they do not leave any remainder when divided by 181.

The prime factors of the number 181 can be determined using the technique of prime factorization.

How To Find the Factors of 181?

You can find the factors of 181 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 181, create a list containing the numbers that are exactly divisible by 181 with zero remainders. One important thing to note is that 1 and 181 are the 181’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 181 are determined as follows:

\[\dfrac{181}{1} = 181\]

Therefore, 1 and 181 are the factors of 181 as it is a prime number.

Total Number of Factors of 181

For 181 there are 2 positive factors and 2 negative ones. So in total, there are 4 factors of 181. 

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

  1. Find the 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 181 is given as:

Factorization of 181 is 1 x 181.

The exponent of 1 and 181 is 1.

Adding 1 to each and multiplying them together results in 4.

Therefore, the total number of factors of 181 is 4. 2 are positive and 2 factors are negative.

Important Notes

Here are some important 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 181 by Prime FactorizationFactor of 181 by Prime Factorization

The number 181 is a prime number. Prime factorization is a useful technique for finding the number’s prime factors and expressing the number as the product of its prime factors.

Before finding the factors of 181 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 181, start dividing by its smallest 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 181 can be expressed as:

181 = 1 x 181

Factors of 181 in PairsFactor of 181 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 of the given numbers.

As 181 is a prime number and it has only two factors, therefore, there is only 1-factor pair for 181.

1 x 181 = 181 

The possible factor pair of 181 is given as (1, 181).

All these numbers in pairs, when multiplied, give 181 as the product.

The negative factor pair of 181 is given as:

-1 x -181 = 181 

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 and -181 are called negative factors of 181.

The list of all the factors of 181 including positive as well as negative numbers is given below.

Factor list of 181: 1, -1, 181, and -181

Factors of 181 Solved Examples

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

Example 1

How many factors of 181 are there?


The total number of Factors of 181 is 2.

Factors of 181 are 1 and 181.

Example 2

Find the factors of 181 using prime factorization.


The prime factorization of 181 is given as:

181 $\div$ 1 = 181 

So the prime factorization of 181 can be written as:

1 x 181 = 181 

Factors of 180|Factors List| Factors of 182