Greatest Common Factor of 72, 78, 21, 378

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

• Greatest Common Factor of 72, 78, 21, 378 by common division method
• Greatest Common Factor of 72, 78, 21, 378 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 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

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 21

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

1,3,7,21

Factors of 378

List of positive integer factors of 378 that divides 378 without a remainder.

1,2,3,6,7,9,14,18,21,27,42,54,63,126,189,378

Greatest Common Factor

We found the factors 72,78,21,378 . The biggest common factor number is the GCF number.
So the greatest common factor 72,78,21,378 is 3.

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

• GCF of 21, 47, 28, 795
• GCF of 70, 91, 47, 234
• GCF of 76, 17, 71, 349
• GCF of 91, 83, 70, 432
• GCF of 60, 74, 41, 468

1. What is the GCF of 72, 78, 21, 378?

Answer: GCF of 72, 78, 21, 378 is 3.

2. How to Find the GCF of 72, 78, 21, 378

Answer: Greatest Common Factor(GCF) of 72, 78, 21, 378 = 3

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

Step 2: Then multiply all the prime factors GCF(72, 78, 21, 378) = 3.