What are the Factors of 378?

The following are the different types of factors of 378:

• Factors of 378: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378

• Sum of Factors of 378: 960

• Negative Factors of 378: -1, -2, -3, -6, -7, -9, -14, -18, -21, -27, -42, -54, -63, -126, -189, -378

• Prime Factors of 378: 2, 3, 7

• Prime Factorization of 378: 2^1 × 3^3 × 7^1

There are two ways to find the factors of 378: using factor pairs, and using prime factorization.

Factor pairs of 378 are any two numbers that, when multiplied together, equal 378. The question to ask is “what two numbers multiplied together equal 378?” Every factor can be paired with another factor, and multiplying the two will result in 378.

To find the factor pairs of 378, follow these steps:

Step 1:

Find the smallest prime number that is larger than 1, and is a factor of 378. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2.

Step 2:

Divide 378 by the smallest prime factor, in this case, 2:

378 ÷ 2 = 189

2 and 189 will make a new factor pair.

Step 3:

Repeat Steps 1 and 2, using 189 as the new focus. Find the smallest prime factor that isn’t 1, and divide 189 by that number. In this case, 3 is the new smallest prime factor:

189 ÷ 3 = 63

Remember that this new factor pair is only for the factors of 189, not 378. So, to finish the factor pair for 378, you’d multiply 2 and 3 before pairing with 63:

2 x 3 = 6

Step 4:

Repeat this process until there are no longer any prime factors larger than one to divide by. At the end, you should have the full list of factor pairs.

Here are all the factor pairs for 378:

(1, 378), (2, 189), (3, 126), (6, 63), (7, 54), (9, 42), (14, 27), (18, 21)

So, to list all the factors of 378: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378

The negative factors of 378 would be: -1, -2, -3, -6, -7, -9, -14, -18, -21, -27, -42, -54, -63, -126, -189, -378

To find the Prime factorization of 378, we break down all the factors of 378 until we are left with only prime factors. We then express n as a product of multiplying the prime factors together.

The process of finding the prime factorization of 378 only has a few differences from the above method of finding the factors of 378. Instead of ensuring we find the right factor pairs, we continue to factor each step until we are left with only the list of smallest prime factors greater than 1.

Here are the steps for finding the prime factorization of 378:

Step 1:

Find the smallest prime number that is larger than 1, and is a factor of 378. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2.

Step 2:

Divide 378 by the smallest prime factor, in this case, 2

378 ÷ 2 = 189

2 becomes the first number in our prime factorization.

Step 3:

Repeat Steps 1 and 2, using 189 as the new focus. Find the smallest prime factor that isn’t 1, and divide 189 by that number. The smallest prime factor you pick for 189 will then be the next prime factor. If you keep repeating this process, there will be a point where there will be no more prime factors left, which leaves you with the prime factors for prime factorization.

So, the unique prime factors of 378 are: 2, 3, 7

Practice your factoring skills by exploring how to factor other numbers, like the ones below:

Factors of 45 - The factors of 45 are 1, 3, 5, 9, 15, 45

Factors of 136 - The factors of 136 are 1, 2, 4, 8, 17, 34, 68, 136

Factors of 143 - The factors of 143 are 1, 11, 13, 143

Factors of 36 - The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36