Factors of 33
There are 4 factors of 33 — the full list is below, with factor pairs, prime factorization, and divisibility notes.
Factors of 33
1, 3, 11, 33
Factor pairs of 33
- 1 × 33
- 3 × 11
Prime factorization of 33
33 = 3 × 11
Number facts
- 33 is a composite number.
- 33 has 4 factors.
- 33 is not a perfect square.
- The sum of all factors of 33 is 48.
Divisibility rules that apply to 33
- 33 is divisible by 3 because the sum of its digits (6) is divisible by 3.
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How the factors of 33 are calculated
To find the factors of 33, every whole number from 1 up to the square root of 33(about 5.74) is tested for even division. 33 is odd, and it divides evenly by 3, 11. Written as a product of primes, 33 = 3 × 11, which confirms every factor above is a combination of those prime building blocks.
Frequently asked questions about 33
How many factors does 33 have?
33 has 4 factors: 1, 3, 11, 33.
Is 33 a prime number?
No. 33 is composite because it has factors other than 1 and itself.
What are the factor pairs of 33?
The factor pairs of 33 are 1 × 33, 3 × 11.
What is the prime factorization of 33?
The prime factorization of 33 is 3 × 11.