GCF for 20 and 32

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 20 and 32?

Answer: GCF of 20 and 32 is 4

(Four)

Finding GCF for 20 and 32 using all factors (divisors) listing

The first method to find GCF for numbers 20 and 32 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 32: 1, 2, 4, 8, 16, 32

So the Greatest Common Factor for 20 and 32 is 4

Finding GCF for 20 and 32 by Prime Factorization

The second method to find GCF for numbers 20 and 32 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 32: 2, 2, 2, 2, 2

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 32? (The answer is: 4). Select the first number (e.g. '20') and the second number (e.g. '32'). 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
5321
6322
7321
8328
9321
10322
11321
12324
13321
14322
15321
163216
17321
18322
19321
20324
21321
22322
23321
24328
25321
26322
27321
28324
29321
30322
31321
323232
33321
34322

FAQ

What is the Greatest common Divisor of 20 and 32?

GCF of 20 and 32 is 4

See Also