Greatest Common Factor of 21, 51, 216

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

• Greatest Common Factor of 21, 51, 216 by common division method
• Greatest Common Factor of 21, 51, 216 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

Factors of 21

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

1,3,7,21

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

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 21,51,216 . The biggest common factor number is the GCF number.
So the greatest common factor 21,51,216 is 3.

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

• GCF of 23, 51, 730
• GCF of 28, 59, 366
• GCF of 36, 70, 844
• GCF of 45, 49, 512
• GCF of 18, 33, 500

1. What is the GCF of 21, 51, 216?

Answer: GCF of 21, 51, 216 is 3.

2. How to Find the GCF of 21, 51, 216

Answer: Greatest Common Factor(GCF) of 21, 51, 216 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 51, 216) = 3.