GCF for 22 and 42

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest Common Divisor of 22 and 42?

Answer

GCF of 22 and 42 is 2

(Two)

Finding GCF for 22 and 42 using all factors (divisors) listing

The first method to find GCF for numbers 22 and 42 is to list all factors for both numbers and pick the highest common one:

All factors of 22: 1, 2, 11, 22

All factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

So the Greatest Common Factor for 22 and 42 is 2

Finding GCF for 22 and 42 by Prime Factorization

The second method to find GCF for numbers 22 and 42 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 22: 2, 11

All Prime Factors of 42: 2, 3, 7

As we can see there is only one Prime Factor common to both numbers. It is 2

So 2 is the Greatest Common Factor of 22 and 42

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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 22 and 42? (The answer is: 2). Select the first number (e.g. '22') and the second number (e.g. '42'). 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 1 Number 2 GCF
7 42 7
8 42 2
9 42 3
10 42 2
11 42 1
12 42 6
13 42 1
14 42 14
15 42 3
16 42 2
17 42 1
18 42 6
19 42 1
20 42 2
21 42 21
22 42 2
23 42 1
24 42 6
25 42 1
26 42 2
27 42 3
28 42 14
29 42 1
30 42 6
31 42 1
32 42 2
33 42 3
34 42 2
35 42 7
36 42 6

FAQ

What is the Greatest Common Divisor of 22 and 42?
GCF of 22 and 42 is 2

How to find the GCF of 22 and 42?
You can find the GCF of 22 and 42 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 22 and 42 is 2.

See Also