Factors of 10
There are 4 factors of 10 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 10
1, 2, 5, 10
Factor pairs of 10
- 1 × 10
- 2 × 5
Prime factorization of 10
10 = 2 × 5
Number facts
- 10 is a composite number.
- 10 has 4 factors.
- 10 is not a perfect square.
- The sum of all factors of 10 is 18.
Divisibility rules that apply to 10
- 10 is divisible by 2 because it ends in an even digit (0, 2, 4, 6, or 8).
- 10 is divisible by 5 because it ends in 0 or 5.
- 10 is divisible by 10 because it ends in 0.
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How the factors of 10 are calculated
To find the factors of 10, every whole number from 1 up to the square root of 10(about 3.16) is tested for even division. 10 is even, and it divides evenly by 2, 5. Written as a product of primes, 10 = 2 × 5, which confirms every factor above is a combination of those prime building blocks.
Frequently asked questions about 10
How many factors does 10 have?
10 has 4 factors: 1, 2, 5, 10.
Is 10 a prime number?
No. 10 is composite because it has factors other than 1 and itself.
What are the factor pairs of 10?
The factor pairs of 10 are 1 × 10, 2 × 5.
What is the prime factorization of 10?
The prime factorization of 10 is 2 × 5.