Greatest Common Factor of 20, 91, 89, 117

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

• Greatest Common Factor of 20, 91, 89, 117 by common division method
• Greatest Common Factor of 20, 91, 89, 117 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 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Factors of 117

List of positive integer factors of 117 that divides 117 without a remainder.

1,3,9,13,39,117

Greatest Common Factor

We found the factors 20,91,89,117 . The biggest common factor number is the GCF number.
So the greatest common factor 20,91,89,117 is 1.

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

• GCF of 42, 99, 34, 986
• GCF of 28, 54, 20, 215
• GCF of 86, 33, 60, 330
• GCF of 19, 71, 38, 255
• GCF of 20, 27, 30, 225

1. What is the GCF of 20, 91, 89, 117?

Answer: GCF of 20, 91, 89, 117 is 1.

2. How to Find the GCF of 20, 91, 89, 117

Answer: Greatest Common Factor(GCF) of 20, 91, 89, 117 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 91, 89, 117) = 1.