# Factors of 21

**Factors of 21** are **1, 3, 7**. There are 3 integers that are factors of 21. The biggest factor of 21 is **7**. Positive integers that divides 21 without a remainder are listed below.

## What are the multiples of 21?

- 1
- 3
- 7

### What are the factors of 21 in 2 pairs?

- 1 × 21 = 21
- 3 × 7 = 21
- 7 × 3 = 21

### Factors of 21 Table

Factor | Factor Number |
---|---|

1 | one |

3 | three |

7 | seven |

#### Related Factors

- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45

#### Related Greatest Common Factors of 21

- GCF of 21 and 25
- GCF of 21 and 26
- GCF of 21 and 27
- GCF of 21 and 28
- GCF of 21 and 29
- GCF of 21 and 30
- GCF of 21 and 31
- GCF of 21 and 32
- GCF of 21 and 33
- GCF of 21 and 34
- GCF of 21 and 35
- GCF of 21 and 36
- GCF of 21 and 37
- GCF of 21 and 38
- GCF of 21 and 39
- GCF of 21 and 40
- GCF of 21 and 41

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