Greatest Common Factor of 21, 13, 14, 63

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

• Greatest Common Factor of 21, 13, 14, 63 by common division method
• Greatest Common Factor of 21, 13, 14, 63 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 14

List of positive integer factors of 14 that divides 14 without a remainder.

1,2,7,14

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 21,13,14,63 . The biggest common factor number is the GCF number.
So the greatest common factor 21,13,14,63 is 1.

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

• GCF of 30, 39, 72, 85
• GCF of 19, 90, 77, 84
• GCF of 79, 16, 41, 62
• GCF of 31, 21, 29, 42
• GCF of 94, 48, 54, 40

1. What is the GCF of 21, 13, 14, 63?

Answer: GCF of 21, 13, 14, 63 is 1.

2. How to Find the GCF of 21, 13, 14, 63

Answer: Greatest Common Factor(GCF) of 21, 13, 14, 63 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 13, 14, 63) = 1.