Greatest Common Factor of 16, 54, 11, 21

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

• Greatest Common Factor of 16, 54, 11, 21 by common division method
• Greatest Common Factor of 16, 54, 11, 21 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 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 54

List of positive integer factors of 54 that divides 54 without a remainder.

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

Factors of 11

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

1,11

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 16,54,11,21 . The biggest common factor number is the GCF number.
So the greatest common factor 16,54,11,21 is 1.

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

• GCF of 57, 79, 30, 69
• GCF of 18, 47, 50, 16
• GCF of 38, 81, 97, 45
• GCF of 46, 68, 92, 53
• GCF of 58, 40, 61, 14

1. What is the GCF of 16, 54, 11, 21?

Answer: GCF of 16, 54, 11, 21 is 1.

2. How to Find the GCF of 16, 54, 11, 21

Answer: Greatest Common Factor(GCF) of 16, 54, 11, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(16, 54, 11, 21) = 1.