Factors of 27
There are 4 factors of 27 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 27
1, 3, 9, 27
Factor pairs of 27
- 1 × 27
- 3 × 9
Prime factorization of 27
27 = 3³
Number facts
- 27 is a composite number.
- 27 has 4 factors.
- 27 is not a perfect square.
- The sum of all factors of 27 is 40.
Divisibility rules that apply to 27
- 27 is divisible by 3 because the sum of its digits (9) is divisible by 3.
- 27 is divisible by 9 because the sum of its digits (9) is divisible by 9.
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How the factors of 27 are calculated
To find the factors of 27, every whole number from 1 up to the square root of 27(about 5.20) is tested for even division. 27 is odd, and it divides evenly by 3, 9. Written as a product of primes, 27 = 3³.
Frequently asked questions about 27
How many factors does 27 have?
27 has 4 factors: 1, 3, 9, 27.
Is 27 a prime number?
No. 27 is composite because it has factors other than 1 and itself.
What are the factor pairs of 27?
The factor pairs of 27 are 1 × 27, 3 × 9.
What is the prime factorization of 27?
The prime factorization of 27 is 3³.