Greatest Common Factor of 20, 65, 12, 79

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

• Greatest Common Factor of 20, 65, 12, 79 by common division method
• Greatest Common Factor of 20, 65, 12, 79 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 20

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

1,2,4,5,10,20

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Greatest Common Factor

We found the factors 20,65,12,79 . The biggest common factor number is the GCF number.
So the greatest common factor 20,65,12,79 is 1.

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

• GCF of 96, 50, 23, 92
• GCF of 31, 52, 28, 97
• GCF of 46, 63, 47, 89
• GCF of 20, 49, 14, 12
• GCF of 78, 51, 29, 47

1. What is the GCF of 20, 65, 12, 79?

Answer: GCF of 20, 65, 12, 79 is 1.

2. How to Find the GCF of 20, 65, 12, 79

Answer: Greatest Common Factor(GCF) of 20, 65, 12, 79 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 65, 12, 79) = 1.