 # Factors of 351: Prime Factorization, Methods, and Examples

The factors of 351 are all the integers that can completely divide the number 351. One is the smallest factor of 351 and the number itself is the largest factor, for instance, in this case, the largest factor is 351 itself. The total number of factors of 351 is 8.

### Factors of 351

Here are the factors of number 351.

Factors of 351: 1, 3, 9, 13, 27, 39, 117 and 351

### Negative Factors of 351

The negative factors of 351 are similar to its positive aspects, just with a negative sign.

Negative Factors of 351: -1, -3, -9, -13, -27, -39, -117 and -351

### Prime Factorization of 351

The prime factorization of 351 is the way of expressing its prime factors in the product form.

Prime Factorization: 3 x 3 x 3 x 13

In this article, we will learn about the factors of 351 and how to find them using various techniques such as upside-down division, prime factorization, and factor tree.

## What Are the Factors of 351?

The factors of 351 are 1, 3, 9, 13, 27, 39, 117 and 351. These numbers are the factors as they do not leave any remainder when divided by 351.

The factors of 351 are classified as prime numbers and composite numbers. The prime factors of the number 351 can be determined using the prime factorization technique.

## How To Find the Factors of 351?

You can find the factors of 351 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 351, create a list containing the numbers that are exactly divisible by 351 with zero remainders. One important thing to note is that 1 and 351 are the 351’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 351 are determined as follows:

$\dfrac{351}{1} = 351$

$\dfrac{351}{3} = 117$

$\dfrac{351}{9} = 39$

$\dfrac{351}{13} = 27$

$\dfrac{351}{351} = 1$

Therefore, 1, 3, 9, 13, 27, 39, 117, and 351 are the factors of 351.

### Total Number of Factors of 351

For 351, there are 8 positive factors and 8 negative ones. So in total, there are 16 factors of 351.

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 351 is given as:

Factorization of 351 is 1 x 3$^3$ x 13.

The exponent of 1, and 13 is 1 whereas the exponent of 3 is 3.

Adding 1 to each and multiplying them together results in 16.

Therefore, the total number of factors of 351 is 16. 8 are positive, and 8 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 351 by Prime Factorization

The number 351 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. Before finding the factors of 351 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 351, 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 351 can be expressed as:

351 = 3$^3$ x 13

## Factors of 351 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. For 351, the factor pairs can be found as:

1 x 351 = 351

3 x 117 = 351

9 x 39 = 351

13 x 27 = 351

The possible factor pairs of 351 are given as (1, 351), (3, 117), (9, 39) and

(13, 27).

All these numbers in pairs, when multiplied, give 351 as the product.

The negative factor pairs of 351 are given as:

-1 x -351 = 351

-3 x -117 = 351

-9 x -39 = 351

-13 x -27 = 351

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, -13, -27, -39, -117 and -351 are called negative factors of 351.

The list of all the factors of 351, including positive as well as negative numbers, is given below.

Factor list of 351: 1,-1, 3, -3, 9, -9, 13, -13, 27, -27, 39, -39, 117, -117, 351 and -351

## Factors of 351 Solved Examples

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

### Example 1

How many factors of 351 are there?

### Solution

The total number of Factors of 351 is 8.

Factors of 351 are 1, 3, 9, 13, 27, 39, 117 and 351

### Example 2

Find the factors of 351 using prime factorization.

### Solution

The prime factorization of 351 is given as:

351 $\div$ 3 = 117

117 $\div$ 3 = 39

39 $\div$ 3 = 13

13 $\div$ 13 = 1

So the prime factorization of 351 can be written as:

3 x 3 x 3 x13 = 351