Greatest Common Factor of 21, 54, 24, 63

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

• Greatest Common Factor of 21, 54, 24, 63 by common division method
• Greatest Common Factor of 21, 54, 24, 63 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 21

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

1,3,7,21

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 24

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Greatest Common Factor

We found the factors 21,54,24,63 . The biggest common factor number is the GCF number.
So the greatest common factor 21,54,24,63 is 3.

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

• GCF of 11, 54, 55, 22
• GCF of 11, 60, 76, 13
• GCF of 11, 72, 56, 99
• GCF of 70, 71, 74, 12
• GCF of 71, 23, 60, 46

1. What is the GCF of 21, 54, 24, 63?

Answer: GCF of 21, 54, 24, 63 is 3.

2. How to Find the GCF of 21, 54, 24, 63

Answer: Greatest Common Factor(GCF) of 21, 54, 24, 63 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 54, 24, 63) = 3.