Greatest Common Factor of 28, 56, 20, 11

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

• Greatest Common Factor of 28, 56, 20, 11 by common division method
• Greatest Common Factor of 28, 56, 20, 11 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

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 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Greatest Common Factor

We found the factors 28,56,20,11 . The biggest common factor number is the GCF number.
So the greatest common factor 28,56,20,11 is 1.

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

• GCF of 98, 20, 23, 28
• GCF of 86, 60, 34, 45
• GCF of 38, 58, 39, 78
• GCF of 88, 63, 31, 11
• GCF of 74, 23, 60, 27

1. What is the GCF of 28, 56, 20, 11?

Answer: GCF of 28, 56, 20, 11 is 1.

2. How to Find the GCF of 28, 56, 20, 11

Answer: Greatest Common Factor(GCF) of 28, 56, 20, 11 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 56, 20, 11) = 1.