Greatest Common Factor of 21, 55, 472, 636

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

• Greatest Common Factor of 21, 55, 472, 636 by common division method
• Greatest Common Factor of 21, 55, 472, 636 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 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 472

List of positive integer factors of 472 that divides 472 without a remainder.

1,2,4,8,59,118,236,472

Factors of 636

List of positive integer factors of 636 that divides 636 without a remainder.

1,2,3,4,6,12,53,106,159,212,318,636

Greatest Common Factor

We found the factors 21,55,472,636 . The biggest common factor number is the GCF number.
So the greatest common factor 21,55,472,636 is 1.

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

• GCF of 88, 73, 381, 168
• GCF of 76, 45, 919, 136
• GCF of 15, 62, 162, 583
• GCF of 39, 97, 425, 311
• GCF of 68, 64, 376, 654

1. What is the GCF of 21, 55, 472, 636?

Answer: GCF of 21, 55, 472, 636 is 1.

2. How to Find the GCF of 21, 55, 472, 636

Answer: Greatest Common Factor(GCF) of 21, 55, 472, 636 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 55, 472, 636) = 1.