Greatest Common Factor of 81, 56, 60, 72

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

• Greatest Common Factor of 81, 56, 60, 72 by common division method
• Greatest Common Factor of 81, 56, 60, 72 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

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

Greatest Common Factor

We found the factors 81,56,60,72 . The biggest common factor number is the GCF number.
So the greatest common factor 81,56,60,72 is 1.

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

• GCF of 64, 12, 36, 44
• GCF of 86, 50, 69, 21
• GCF of 18, 61, 49, 39
• GCF of 69, 65, 91, 29
• GCF of 98, 53, 48, 61

1. What is the GCF of 81, 56, 60, 72?

Answer: GCF of 81, 56, 60, 72 is 1.

2. How to Find the GCF of 81, 56, 60, 72

Answer: Greatest Common Factor(GCF) of 81, 56, 60, 72 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 56, 60, 72) = 1.