Greatest Common Factor of 21, 80, 216

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

• Greatest Common Factor of 21, 80, 216 by common division method
• Greatest Common Factor of 21, 80, 216 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 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 216

List of positive integer factors of 216 that divides 216 without a remainder.

1,2,3,4,6,8,9,12,18,24,27,36,54,72,108,216

Greatest Common Factor

We found the factors 21,80,216 . The biggest common factor number is the GCF number.
So the greatest common factor 21,80,216 is 1.

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

• GCF of 92, 68, 252
• GCF of 99, 70, 870
• GCF of 86, 17, 314
• GCF of 84, 43, 666
• GCF of 33, 71, 519

1. What is the GCF of 21, 80, 216?

Answer: GCF of 21, 80, 216 is 1.

2. How to Find the GCF of 21, 80, 216

Answer: Greatest Common Factor(GCF) of 21, 80, 216 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 80, 216) = 1.