Greatest Common Factor of 72, 91, 43, 20

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

• Greatest Common Factor of 72, 91, 43, 20 by common division method
• Greatest Common Factor of 72, 91, 43, 20 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 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 91

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

1,7,13,91

Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 72,91,43,20 . The biggest common factor number is the GCF number.
So the greatest common factor 72,91,43,20 is 1.

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

• GCF of 18, 90, 67, 99
• GCF of 53, 55, 34, 23
• GCF of 86, 76, 49, 18
• GCF of 96, 76, 91, 87
• GCF of 28, 71, 31, 27

1. What is the GCF of 72, 91, 43, 20?

Answer: GCF of 72, 91, 43, 20 is 1.

2. How to Find the GCF of 72, 91, 43, 20

Answer: Greatest Common Factor(GCF) of 72, 91, 43, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(72, 91, 43, 20) = 1.