Factors of 74
The factors of 74 are 1, 2, 37, 74. No, 74 is a composite number. Its prime factorization is 2 × 37.
Factor pairs of 74
Every factor has a partner that multiplies with it to give 74. Listing pairs from the outside in is the fastest way to find all the factors: once the two numbers in a pair meet in the middle, you have them all.
| Pair | Check |
|---|---|
| 1 and 74 | 1 × 74 = 74 |
| 2 and 37 | 2 × 37 = 74 |
Prime factorization of 74, step by step
Divide by the smallest prime that goes in evenly, then repeat on the result until you reach 1. The divisors you used are the prime factors.
| Step | Divide | Result |
|---|---|---|
| 1 | 74 ÷ 2 | 37 |
| 2 | 37 ÷ 37 | 1 |
So 74 = 2 × 37, written compactly as 2 × 37.
Divisibility checks for 74
The quick rules a student uses before dividing, applied to 74:
| Divisible by | Rule | For 74 | Result |
|---|---|---|---|
| 2 | last digit is even | last digit 4 | yes |
| 3 | digit sum divisible by 3 | digits add to 11 | no |
| 4 | last two digits divisible by 4 | 74 ÷ 4 | no |
| 5 | last digit is 0 or 5 | last digit 4 | no |
| 6 | divisible by both 2 and 3 | even, digit sum 11 | no |
| 8 | last three digits divisible by 8 | 74 ÷ 8 | no |
| 9 | digit sum divisible by 9 | digits add to 11 | no |
| 10 | last digit is 0 | last digit 4 | no |
Frequently Asked Questions
What are the factors of 74?
The factors of 74 are 1, 2, 37, 74.
Is 74 a prime number?
No, 74 is a composite number. Its prime factorization is 2 × 37.
How many factors does 74 have?
74 has 4 factors. You can get that count from the prime factorization without listing them: add 1 to each exponent in 2 × 37 and multiply -- (1+1) × (1+1) = 4.
Is 74 even or odd?
74 is even (2 is one of its factors).
What is the sum of the factors of 74?
1 + 2 + 37 + 74 = 114. Leaving out 74 itself, the proper factors add to 40, less than 74, so 74 is a deficient number.
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