GCF for 20 and 24

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 20 and 24?

Answer: GCF of 20 and 24 is 4

(Four)

Finding GCF for 20 and 24 using all factors (divisors) listing

The first method to find GCF for numbers 20 and 24 is to list all factors for both numbers and pick the highest common one:

All factors of 20: 1, 2, 4, 5, 10, 20

All factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

So the Greatest Common Factor for 20 and 24 is 4

Finding GCF for 20 and 24 by Prime Factorization

The second method to find GCF for numbers 20 and 24 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 20: 2, 2, 5

All Prime Factors of 24: 2, 2, 2, 3

As we can see there are Prime Factors common to both numbers: 2, 2

Now we need to multiply them to find GCF: 2 × 2 = 4

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About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest common Divisor of 20 and 24? (The answer is: 4). Select the first number (e.g. '20') and the second number (e.g. '24'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

GCF Table

Number 1Number 2GCF
5241
6246
7241
8248
9243
10242
11241
122412
13241
14242
15243
16248
17241
18246
19241
20244
21243
22242
23241
242424
25241
26242
27243
28244
29241
30246
31241
32248
33243
34242

FAQ

What is the Greatest common Divisor of 20 and 24?

GCF of 20 and 24 is 4

See Also