Greatest Common Factor of 21, 991, 216

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

• Greatest Common Factor of 21, 991, 216 by common division method
• Greatest Common Factor of 21, 991, 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 991

List of positive integer factors of 991 that divides 991 without a remainder.

1,991

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 21,991,216 . The biggest common factor number is the GCF number.
So the greatest common factor 21,991,216 is 1.

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

• GCF of 46, 233, 991
• GCF of 14, 914, 140
• GCF of 48, 592, 120
• GCF of 88, 296, 579
• GCF of 27, 688, 565

1. What is the GCF of 21, 991, 216?

Answer: GCF of 21, 991, 216 is 1.

2. How to Find the GCF of 21, 991, 216

Answer: Greatest Common Factor(GCF) of 21, 991, 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, 991, 216) = 1.