Greatest Common Factor of 21, 60, 80, 54

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

• Greatest Common Factor of 21, 60, 80, 54 by common division method
• Greatest Common Factor of 21, 60, 80, 54 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 21

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

1,3,7,21

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 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 54

List of positive integer factors of 54 that divides 54 without a remainder.

1,2,3,6,9,18,27,54

Greatest Common Factor

We found the factors 21,60,80,54 . The biggest common factor number is the GCF number.
So the greatest common factor 21,60,80,54 is 1.

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

• GCF of 32, 38, 23, 41
• GCF of 88, 77, 94, 92
• GCF of 62, 92, 64, 66
• GCF of 99, 26, 60, 98
• GCF of 26, 97, 56, 51

1. What is the GCF of 21, 60, 80, 54?

Answer: GCF of 21, 60, 80, 54 is 1.

2. How to Find the GCF of 21, 60, 80, 54

Answer: Greatest Common Factor(GCF) of 21, 60, 80, 54 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 60, 80, 54) = 1.