Factors of
20
Factors of
24

BASIC MATH EXAMPLES

FACTORS: FACTORS OF 21

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FACTORS OF 21

21 has 4 factors.

Factors:

1, 3, 7, 21

Factor Pairs:

  • 1 × 21 = 21
  • 3 × 7 = 21
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DESCRIPTIONS

Factors of 21 can be found by ckecking the divisibility of 21 by the whole numbers 1 through 21\mathbf{\sqrt{\color{chocolate}21}} ≈ 4.58. If a whole number divides 21 exactly, both

  • the number itself and
  • the result of the division by that number

are the factors of 21.

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OTHER INFORMATION

Prime factors of 21 are 3 and 7.

INFORMATION

The solution and descriptions above are generated by the factors calculator. You can use the factors calculator to see the factors of other numbers.

 
 

FACTORS OF A NUMBER

Factors of a number a are the numbers that divide a exactly, without a remainder. A number can be expressed as the multiplication of its factors.

OTHER FEATURES OF 21

👉 Click here to see the prime factors of 21

👉 Click here to see the prime factorization of 21

👉 Click here to see the factor tree of 21

👉 Click here to see the upside-down division of 21

 

EXAMPLES

Factor Examples

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FACTORS OF 20

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