Factors of 818: Prime Factorization, Methods, and Examples

818 has 2-factor pairs which mean it has 4 factors in total. These factors include all the integers that give zero as a remainder and an integer as a quotient when 818 is divided by them. 818 has 2 prime factors. 

Factors Of 818

The factors of 818 and its prime factorization are discussed in detail below.

Factors of 818

Here are the factors of number 818.

Factors of 818: 1, 2, 409, 818

Negative Factors of 818

The negative factors of 818 are similar to its positive aspects, just with a negative sign.

Negative Factors of 818: -1, -2, -409, -818

Prime Factorization of 818

The prime factorization of 818 is the way of expressing its prime factors in the product form.

Prime Factorization: 2 x 409

In this article, we will learn about the factors of 818 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

What Are the Factors of 818?

The factors of 818 are -1, -2, -409, -818. These numbers are the factors as they do not leave any remainder when divided by 818.

The factors of 818 are classified as prime numbers and composite numbers. The prime factors of the number 818 can be determined using the prime factorization technique.

How To Find the Factors of 818?

You can find the factors of 818 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 818, create a list containing the numbers that are exactly divisible by 818 with zero remainders. One important thing to note is that 1 and 818 are the 818’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 818 are determined as follows:

\[\dfrac{818}{1} = 818\]

\[\dfrac{818}{2} = 409\]

\[\dfrac{818}{409} = 2\]

\[\dfrac{818}{818} = 1\]

Therefore, 1, 2, 409, and 818 are the factors of 818.

Total Number of Factors of 818

For 818, there are 4 positive factors and 4 negative ones. So in total, there are  factors of 818. 

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 818 is given as:

Factorization of 818 is 1 x 2 x 409.

The exponent of 1, 2, and 409 is k1.

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

Therefore, the total number of factors of 818 is 8. 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 818 by Prime Factorization

The number 818 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 818


Before finding the factors of 818 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 818, 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 818 can be expressed as:

818 = 2 x 409

Factors of 818 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 818 in Pairs


For 818, the factor pairs can be found as:

1 x 818 = 818

2 x 409 = 818 

The possible factor pairs of 818 are given as (1, 818) and (2, 409).

All these numbers in pairs, when multiplied, give 818 as the product.

The negative factor pairs of 818 are given as:

-1 x -818 = 818 

-2 x -409 = 818

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, -2, -409, and -818 are called negative factors of 818.

The list of all the factors of 818, including positive as well as negative numbers, is given below.

Factor list of 818: 1, -1, 2,  -2, 409, -409, 818 and -818

Factors of 818 Solved Examples

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

Example 1

How many factors of 818 are there?


The total number of Factors of 818 is 4.

Factors of 818 are 1, 2, 409, and 818 

Example 2

Find the factors of 818 using prime factorization.


The prime factorization of 818 is given as:

818 $\div$ 2 = 409 

409 $\div$ 409 = 1 

So the prime factorization of 818 can be written as:

2 x 409 = 818

Factors of 817|Factors List| Factors of 819