Factors of 20

"Factors of a Number" Calculator

Factors of

What are the Factors of 20?

Answer

Factors of 20:
1, 2, 4, 5, 10, 20

(number 20 has 6 factors)

Factor Pairs of 20

A Factor Pair of number 20 is a combination of two factors which can be multiplied together to equal 20.

List of all possible Factor Pairs of 20:

  • 1 × 20 = 20
  • 2 × 10 = 20
  • 4 × 5 = 20

How to find the Factors of 20

Divide 20 by every whole number from 1 up to 4. Each division without a remainder gives a factor and its pair. There is no point going further: 5 × 5 = 25 is already greater than 20, so any larger divisor would pair with a smaller one you have already checked.

  • 20 ÷ 1 = 20 — factors 1 and 20
  • 20 ÷ 2 = 10 — factors 2 and 10
  • 20 ÷ 3 — remainder 2, not a factor
  • 20 ÷ 4 = 5 — factors 4 and 5

Why 20 has exactly 6 factors

The count follows from the prime factorization: add 1 to each exponent and multiply. Counting the divisors this way needs no trial division at all, however large the number is.

20 = 22 × 5

(2 + 1) × (1 + 1) = 6

Step-by-step factorization: Prime factors of 20.

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About "Factors of a Number" Calculator

This calculator will help you find all factors of a given number. For example, it can help you find out what are the Factors of 20? (The answer is: 1, 2, 4, 5, 10, 20). Pick the number (e.g. '20'). After that hit the 'Find' button.
The Factors of a number are numbers that divides initial number evenly, with no remainder
"Factors of a Number" Calculator

Factors of

Factors Table

NumberFactors
51, 5
61, 2, 3, 6
71, 7
81, 2, 4, 8
91, 3, 9
101, 2, 5, 10
111, 11
121, 2, 3, 4, 6, 12
131, 13
141, 2, 7, 14
151, 3, 5, 15
161, 2, 4, 8, 16
171, 17
181, 2, 3, 6, 9, 18
191, 19
201, 2, 4, 5, 10, 20
211, 3, 7, 21
221, 2, 11, 22
231, 23
241, 2, 3, 4, 6, 8, 12, 24
251, 5, 25
261, 2, 13, 26
271, 3, 9, 27
281, 2, 4, 7, 14, 28
291, 29
301, 2, 3, 5, 6, 10, 15, 30
311, 31
321, 2, 4, 8, 16, 32
331, 3, 11, 33
341, 2, 17, 34

FAQ

What are the Factors of 20?

Factors of 20: 1, 2, 4, 5, 10, 20

How many factors does 20 have?

Number 20 has 6 factors

How many Factor Pairs does 20 have?

Number 20 has 3 factor pairs

See Also