Greatest Common Factor of 20, 38, 47, 637

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

• Greatest Common Factor of 20, 38, 47, 637 by common division method
• Greatest Common Factor of 20, 38, 47, 637 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 38

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

1,2,19,38

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 637

List of positive integer factors of 637 that divides 637 without a remainder.

1,7,13,49,91,637

Greatest Common Factor

We found the factors 20,38,47,637 . The biggest common factor number is the GCF number.
So the greatest common factor 20,38,47,637 is 1.

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

• GCF of 33, 28, 22, 900
• GCF of 35, 27, 25, 462
• GCF of 18, 44, 84, 440
• GCF of 22, 18, 83, 217
• GCF of 15, 15, 31, 649

1. What is the GCF of 20, 38, 47, 637?

Answer: GCF of 20, 38, 47, 637 is 1.

2. How to Find the GCF of 20, 38, 47, 637

Answer: Greatest Common Factor(GCF) of 20, 38, 47, 637 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 38, 47, 637) = 1.