Greatest Common Factor of 24, 20, 30, 138

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

• Greatest Common Factor of 24, 20, 30, 138 by common division method
• Greatest Common Factor of 24, 20, 30, 138 with matching the biggest common factor

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

Factors of 24

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

Factors of 20

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

1,2,4,5,10,20

Factors of 30

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

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

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 24,20,30,138 . The biggest common factor number is the GCF number.
So the greatest common factor 24,20,30,138 is 2.

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

• GCF of 35, 20, 60, 744
• GCF of 98, 81, 19, 479
• GCF of 99, 97, 87, 520
• GCF of 47, 43, 78, 779
• GCF of 98, 26, 79, 702

1. What is the GCF of 24, 20, 30, 138?

Answer: GCF of 24, 20, 30, 138 is 2.

2. How to Find the GCF of 24, 20, 30, 138

Answer: Greatest Common Factor(GCF) of 24, 20, 30, 138 = 2

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

Step 2: Then multiply all the prime factors GCF(24, 20, 30, 138) = 2.