Greatest Common Factor of 81, 21, 76, 60

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

• Greatest Common Factor of 81, 21, 76, 60 by common division method
• Greatest Common Factor of 81, 21, 76, 60 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

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

Greatest Common Factor

We found the factors 81,21,76,60 . The biggest common factor number is the GCF number.
So the greatest common factor 81,21,76,60 is 1.

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

• GCF of 73, 66, 83, 41
• GCF of 87, 98, 52, 23
• GCF of 68, 32, 31, 69
• GCF of 46, 77, 73, 36
• GCF of 74, 62, 51, 64

1. What is the GCF of 81, 21, 76, 60?

Answer: GCF of 81, 21, 76, 60 is 1.

2. How to Find the GCF of 81, 21, 76, 60

Answer: Greatest Common Factor(GCF) of 81, 21, 76, 60 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 21, 76, 60) = 1.