Greatest Common Factor of 21, 56, 36, 162

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

• Greatest Common Factor of 21, 56, 36, 162 by common division method
• Greatest Common Factor of 21, 56, 36, 162 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 56

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

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

Factors of 36

List of positive integer factors of 36 that divides 36 without a remainder.

1,2,3,4,6,9,12,18,36

Factors of 162

List of positive integer factors of 162 that divides 162 without a remainder.

1,2,3,6,9,18,27,54,81,162

Greatest Common Factor

We found the factors 21,56,36,162 . The biggest common factor number is the GCF number.
So the greatest common factor 21,56,36,162 is 1.

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

• GCF of 89, 69, 53, 669
• GCF of 98, 39, 98, 789
• GCF of 14, 54, 51, 707
• GCF of 45, 42, 55, 646
• GCF of 83, 23, 42, 204

1. What is the GCF of 21, 56, 36, 162?

Answer: GCF of 21, 56, 36, 162 is 1.

2. How to Find the GCF of 21, 56, 36, 162

Answer: Greatest Common Factor(GCF) of 21, 56, 36, 162 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 56, 36, 162) = 1.