Greatest Common Factor of 165, 231, 21

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

• Greatest Common Factor of 165, 231, 21 by common division method
• Greatest Common Factor of 165, 231, 21 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 165

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

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

Factors of 231

List of positive integer factors of 231 that divides 231 without a remainder.

1,3,7,11,21,33,77,231

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 165,231,21 . The biggest common factor number is the GCF number.
So the greatest common factor 165,231,21 is 3.

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

• GCF of 404, 590, 18
• GCF of 661, 356, 90
• GCF of 946, 625, 88
• GCF of 316, 943, 68
• GCF of 392, 258, 21

1. What is the GCF of 165, 231, 21?

Answer: GCF of 165, 231, 21 is 3.

2. How to Find the GCF of 165, 231, 21

Answer: Greatest Common Factor(GCF) of 165, 231, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(165, 231, 21) = 3.