Greatest Common Factor of 57, 39, 20, 6, 90

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

• Greatest Common Factor of 57, 39, 20, 6, 90 by common division method
• Greatest Common Factor of 57, 39, 20, 6, 90 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 57

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

1,3,19,57

Factors of 39

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

1,3,13,39

Factors of 20

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

1,2,4,5,10,20

Factors of 6

List of positive integer factors of 6 that divides 6 without a remainder.

1,2,3,6

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 57,39,20,6,90 . The biggest common factor number is the GCF number.
So the greatest common factor 57,39,20,6,90 is 1.

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

• GCF of 23, 79, 21, 3, 73
• GCF of 67, 82, 87, 6, 47
• GCF of 29, 83, 25, 2, 95
• GCF of 46, 98, 65, 6, 67
• GCF of 52, 27, 57, 4, 81

1. What is the GCF of 57, 39, 20, 6, 90?

Answer: GCF of 57, 39, 20, 6, 90 is 1.

2. How to Find the GCF of 57, 39, 20, 6, 90

Answer: Greatest Common Factor(GCF) of 57, 39, 20, 6, 90 = 1

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

Step 2: Then multiply all the prime factors GCF(57, 39, 20, 6, 90) = 1.