Greatest Common Factor of 21, 255, 165

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

• Greatest Common Factor of 21, 255, 165 by common division method
• Greatest Common Factor of 21, 255, 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 21

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

1,3,7,21

Factors of 255

List of positive integer factors of 255 that divides 255 without a remainder.

1,3,5,15,17,51,85,255

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 21,255,165 . The biggest common factor number is the GCF number.
So the greatest common factor 21,255,165 is 3.

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

• GCF of 23, 899, 938
• GCF of 92, 591, 799
• GCF of 72, 584, 717
• GCF of 98, 490, 101
• GCF of 93, 530, 219

1. What is the GCF of 21, 255, 165?

Answer: GCF of 21, 255, 165 is 3.

2. How to Find the GCF of 21, 255, 165

Answer: Greatest Common Factor(GCF) of 21, 255, 165 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 255, 165) = 3.