Greatest Common Factor of 20, 13, 57

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

• Greatest Common Factor of 20, 13, 57 by common division method
• Greatest Common Factor of 20, 13, 57 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Greatest Common Factor

We found the factors 20,13,57 . The biggest common factor number is the GCF number.
So the greatest common factor 20,13,57 is 1.

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

• GCF of 73, 62, 31
• GCF of 61, 56, 57
• GCF of 83, 19, 44
• GCF of 19, 15, 92
• GCF of 83, 36, 72

1. What is the GCF of 20, 13, 57?

Answer: GCF of 20, 13, 57 is 1.

2. How to Find the GCF of 20, 13, 57

Answer: Greatest Common Factor(GCF) of 20, 13, 57 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 13, 57) = 1.