Greatest Common Factor of 22, 20, 18, 30

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 22, 20, 18, 30 by common division method
• Greatest Common Factor of 22, 20, 18, 30 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 22

List of positive integer factors of 22 that divides 22 without a remainder.

1,2,11,22

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Greatest Common Factor

We found the factors 22,20,18,30 . The biggest common factor number is the GCF number.
So the greatest common factor 22,20,18,30 is 2.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 78, 43, 10, 73
• GCF of 62, 92, 87, 33
• GCF of 54, 77, 42, 63
• GCF of 35, 18, 70, 47
• GCF of 72, 29, 67, 63

1. What is the GCF of 22, 20, 18, 30?

Answer: GCF of 22, 20, 18, 30 is 2.

2. How to Find the GCF of 22, 20, 18, 30

Answer: Greatest Common Factor(GCF) of 22, 20, 18, 30 = 2

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(22, 20, 18, 30) = 2.