Factors: 21
The factors of 21 are the numbers that divide it exactly. Finding factors is the first step in simplifying fractions and factoring expressions.
| Factor | Pairing |
|---|---|
| 1 | 1 × 21 = 21 |
| 3 | 3 × 7 = 21 |
| 7 | 7 × 3 = 21 |
| 21 | 21 × 1 = 21 |
The factors of 21 are the numbers that divide it exactly. Finding factors is the first step in simplifying fractions and factoring expressions.
| Factor | Pairing |
|---|---|
| 1 | 1 × 21 = 21 |
| 3 | 3 × 7 = 21 |
| 7 | 7 × 3 = 21 |
| 21 | 21 × 1 = 21 |