Greatest Common Factor of 38, 30, 20

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

• Greatest Common Factor of 38, 30, 20 by common division method
• Greatest Common Factor of 38, 30, 20 with matching the biggest common factor

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

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

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 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 38,30,20 . The biggest common factor number is the GCF number.
So the greatest common factor 38,30,20 is 2.

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

• GCF of 83, 28, 66
• GCF of 84, 40, 50
• GCF of 70, 97, 30
• GCF of 31, 42, 45
• GCF of 72, 18, 56

1. What is the GCF of 38, 30, 20?

Answer: GCF of 38, 30, 20 is 2.

2. How to Find the GCF of 38, 30, 20

Answer: Greatest Common Factor(GCF) of 38, 30, 20 = 2

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

Step 2: Then multiply all the prime factors GCF(38, 30, 20) = 2.