Greatest Common Factor of 20, 39, 63, 56

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

• Greatest Common Factor of 20, 39, 63, 56 by common division method
• Greatest Common Factor of 20, 39, 63, 56 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 39

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

1,3,13,39

Factors of 63

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

1,3,7,9,21,63

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Greatest Common Factor

We found the factors 20,39,63,56 . The biggest common factor number is the GCF number.
So the greatest common factor 20,39,63,56 is 1.

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

• GCF of 55, 81, 92, 37
• GCF of 43, 85, 26, 18
• GCF of 89, 98, 51, 17
• GCF of 57, 88, 23, 99
• GCF of 67, 99, 49, 26

1. What is the GCF of 20, 39, 63, 56?

Answer: GCF of 20, 39, 63, 56 is 1.

2. How to Find the GCF of 20, 39, 63, 56

Answer: Greatest Common Factor(GCF) of 20, 39, 63, 56 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 39, 63, 56) = 1.