Factor Calculator

Factors of 168

The factors of 168 are 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, and 168. In total, 168 has 16 factors. Its prime factorization is 2³ × 3 × 7, and the sum of all its factors is 480.

All factors of 168

Here are all 16 factors of 168, listed from smallest to largest.

12346781214212428425684168

Factor pairs of 168

These 8 pairs of whole numbers each multiply to give 168.

1 × 168 = 168
2 × 84 = 168
3 × 56 = 168
4 × 42 = 168
6 × 28 = 168
7 × 24 = 168
8 × 21 = 168
12 × 14 = 168

Prime factorization of 168

Dividing 168 by the smallest prime at each step gives its prime factorization:

168 ÷ 2 = 84
84 ÷ 2 = 42
42 ÷ 2 = 21
21 ÷ 3 = 7
7 ÷ 7 = 1
Result: 168 = 2 × 2 × 2 × 3 × 7 = 2³ × 3 × 7

The distinct prime factors of 168 are 2, 3, 7. To factorize any other number, use the prime factorization calculator.

Factor tree of 168

A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.

Factor tree of 16816828424222137
Prime factors are shown in solid indigo. Composite numbers split into their smallest prime and the quotient.

Properties of 168

Number of factors16
Sum of factors480
Sum of proper factors312
Prime factorization2³ × 3 × 7
Prime or composite?Composite
Even or odd?Even
Perfect square?No
Perfect cube?No
ClassificationAbundant

What makes 168 interesting

  • 168 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 8 different ways.
  • 168 is an abundant number: its proper factors sum to 312, which is 144 more than 168 itself.
  • 168 has 3 distinct prime factors (2, 3, 7), which is why it has so many divisors.

How to find the factors of 168 yourself

Divide 168 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √16812.96, because every factor above that pairs with one below it.

168 ÷ 1 = 168
168 ÷ 2 = 84
168 ÷ 3 = 56
168 ÷ 4 = 42
168 ÷ 6 = 28
168 ÷ 7 = 24
168 ÷ 8 = 21
168 ÷ 12 = 14

Reading both columns gives every factor: 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168. The factor calculator does this automatically for any number.

Frequently asked questions about 168

What are the factors of 168?

The factors of 168 are 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, and 168. That is 16 factors in total, counting both 1 and 168.

Is 168 a prime number?

No, 168 is not prime — it is a composite number with 16 factors. A prime number has exactly two factors, but 168 is also divisible by 2.

What is the prime factorization of 168?

The prime factorization of 168 is 2³ × 3 × 7. Written out in full: 2 × 2 × 2 × 3 × 7 = 168. Its distinct prime factors are 2, 3, 7.

What two numbers multiply to give 168?

There are 8 pairs of whole numbers that multiply to 168: 1 × 168, 2 × 84, 3 × 56, 4 × 42, 6 × 28, 7 × 24, 8 × 21, 12 × 14.

What is the sum of the factors of 168?

Adding all the factors of 168 together gives 480. Excluding 168 itself, the proper factors sum to 312.

Is 168 a perfect square?

No, 168 is not a perfect square. There is no whole number that multiplies by itself to give 168. The nearest perfect squares are 144 and 169.

What is the largest factor of 168 other than itself?

The largest factor of 168 apart from 168 itself is 84, since 168 ÷ 84 = 2.

How many factors does 168 have?

168 has 16 factors: 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, and 168. You can verify this from the prime factorization 2³ × 3 × 7: add 1 to each exponent and multiply, giving 4 × 2 × 2 = 16.

Explore more

Try another number in the factor calculator, break 168 down further with the prime factorization calculator, or compare 168 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.