Greatest Common Factor of 78, 21, 165

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

• Greatest Common Factor of 78, 21, 165 by common division method
• Greatest Common Factor of 78, 21, 165 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 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 165

List of positive integer factors of 165 that divides 165 without a remainder.

1,3,5,11,15,33,55,165

Greatest Common Factor

We found the factors 78,21,165 . The biggest common factor number is the GCF number.
So the greatest common factor 78,21,165 is 3.

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

• GCF of 32, 53, 156
• GCF of 40, 18, 132
• GCF of 92, 39, 576
• GCF of 79, 45, 919
• GCF of 55, 76, 828

1. What is the GCF of 78, 21, 165?

Answer: GCF of 78, 21, 165 is 3.

2. How to Find the GCF of 78, 21, 165

Answer: Greatest Common Factor(GCF) of 78, 21, 165 = 3

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

Step 2: Then multiply all the prime factors GCF(78, 21, 165) = 3.