Greatest Common Factor of 63, 21, 72

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

• Greatest Common Factor of 63, 21, 72 by common division method
• Greatest Common Factor of 63, 21, 72 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 63

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

1,3,7,9,21,63

Factors of 21

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

1,3,7,21

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Greatest Common Factor

We found the factors 63,21,72 . The biggest common factor number is the GCF number.
So the greatest common factor 63,21,72 is 3.

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

• GCF of 70, 19, 27
• GCF of 70, 63, 29
• GCF of 95, 30, 78
• GCF of 26, 78, 38
• GCF of 27, 38, 26

1. What is the GCF of 63, 21, 72?

Answer: GCF of 63, 21, 72 is 3.

2. How to Find the GCF of 63, 21, 72

Answer: Greatest Common Factor(GCF) of 63, 21, 72 = 3

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

Step 2: Then multiply all the prime factors GCF(63, 21, 72) = 3.