Greatest Common Factor of 20, 38, 72, 978

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

• Greatest Common Factor of 20, 38, 72, 978 by common division method
• Greatest Common Factor of 20, 38, 72, 978 with matching the biggest common factor

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

Factors of 20

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

1,2,4,5,10,20

Factors of 38

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

1,2,19,38

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 978

List of positive integer factors of 978 that divides 978 without a remainder.

1,2,3,6,163,326,489,978

Greatest Common Factor

We found the factors 20,38,72,978 . The biggest common factor number is the GCF number.
So the greatest common factor 20,38,72,978 is 2.

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

• GCF of 65, 92, 78, 690
• GCF of 76, 82, 62, 295
• GCF of 59, 63, 89, 179
• GCF of 52, 16, 82, 494
• GCF of 24, 13, 46, 383

1. What is the GCF of 20, 38, 72, 978?

Answer: GCF of 20, 38, 72, 978 is 2.

2. How to Find the GCF of 20, 38, 72, 978

Answer: Greatest Common Factor(GCF) of 20, 38, 72, 978 = 2

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

Step 2: Then multiply all the prime factors GCF(20, 38, 72, 978) = 2.