Greatest Common Factor of 21, 27, 56, 407

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

• Greatest Common Factor of 21, 27, 56, 407 by common division method
• Greatest Common Factor of 21, 27, 56, 407 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 27

List of positive integer factors of 27 that divides 27 without a remainder.

1,3,9,27

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 407

List of positive integer factors of 407 that divides 407 without a remainder.

1,11,37,407

Greatest Common Factor

We found the factors 21,27,56,407 . The biggest common factor number is the GCF number.
So the greatest common factor 21,27,56,407 is 1.

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

• GCF of 29, 80, 82, 314
• GCF of 81, 85, 96, 999
• GCF of 11, 60, 34, 897
• GCF of 24, 27, 62, 990
• GCF of 99, 25, 89, 438

1. What is the GCF of 21, 27, 56, 407?

Answer: GCF of 21, 27, 56, 407 is 1.

2. How to Find the GCF of 21, 27, 56, 407

Answer: Greatest Common Factor(GCF) of 21, 27, 56, 407 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 27, 56, 407) = 1.