Factors of 385
The factors of 385 are 1, 5, 7, 11, 35, 55, 77, 385. It has 8 factors.
Factors of 385
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 385 is a whole number that divides it with nothing left over. You only need to test the numbers up to √385 ≈ 19.62; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 8 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: 1 + 5 + 7 + 11 + 35 + 55 + 77 + 385 = 576. Without 385 itself that is 191, so 385 is a deficient number.
LaTeX source of the formulas on this page
\[ 385 = 5 \times 7 \times 11 \]
Factor pairs of 385
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 385 | 1 × 385 = 385 |
| 5 | 77 | 5 × 77 = 385 |
| 7 | 55 | 7 × 55 = 385 |
| 11 | 35 | 11 × 35 = 385 |
Questions
What are the factors of 385?
The factors of 385 are 1, 5, 7, 11, 35, 55, 77, 385. It has 8 factors.
What are the prime factors of 385?
5, 7, 11. As a product: 5 × 7 × 11.
How many factors does 385 have?
385 has 8 factors (4 factor pairs).
What is the sum of the factors of 385?
576.
Is 385 a prime number?
No. It is divisible by 5, so 385 = 5 × 77.