Factors of 3940
The factors of 3940 are 1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940. It has 12 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 3940 is a whole number that divides it with nothing left over. You only need to test the numbers up to √3940 ≈ 62.77; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 12 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: 1 + 2 + 4 + 5 + 10 + 20 + 197 + 394 + 788 + 985 + 1970 + 3940 = 8316. Without 3940 itself that is 4376, so 3940 is an abundant number.
LaTeX source of the formulas on this page
\[ 3940 = 2^{2} \times 5 \times 197 \]Factor pairs of 3940
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 3940 | 1 × 3940 = 3940 |
| 2 | 1970 | 2 × 1970 = 3940 |
| 4 | 985 | 4 × 985 = 3940 |
| 5 | 788 | 5 × 788 = 3940 |
| 10 | 394 | 10 × 394 = 3940 |
| 20 | 197 | 20 × 197 = 3940 |
Questions
What are the factors of 3940?
The factors of 3940 are 1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940. It has 12 factors.
What are the prime factors of 3940?
2, 5, 197. As a product: × 5 × 197.
How many factors does 3940 have?
3940 has 12 factors (6 factor pairs).
What is the sum of the factors of 3940?
8316.
Is 3940 a prime number?
No. It is divisible by 2, so 3940 = 2 × 1970.