Greatest Common Factor of 20, 63, 40, 39

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

• Greatest Common Factor of 20, 63, 40, 39 by common division method
• Greatest Common Factor of 20, 63, 40, 39 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 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Greatest Common Factor

We found the factors 20,63,40,39 . The biggest common factor number is the GCF number.
So the greatest common factor 20,63,40,39 is 1.

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

• GCF of 55, 49, 41, 83
• GCF of 65, 48, 68, 49
• GCF of 28, 49, 92, 10
• GCF of 28, 16, 12, 98
• GCF of 80, 92, 11, 98

1. What is the GCF of 20, 63, 40, 39?

Answer: GCF of 20, 63, 40, 39 is 1.

2. How to Find the GCF of 20, 63, 40, 39

Answer: Greatest Common Factor(GCF) of 20, 63, 40, 39 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 63, 40, 39) = 1.