Greatest Common Factor of 21, 165, 399

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

• Greatest Common Factor of 21, 165, 399 by common division method
• Greatest Common Factor of 21, 165, 399 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 165

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

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

Factors of 399

List of positive integer factors of 399 that divides 399 without a remainder.

1,3,7,19,21,57,133,399

Greatest Common Factor

We found the factors 21,165,399 . The biggest common factor number is the GCF number.
So the greatest common factor 21,165,399 is 3.

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

• GCF of 63, 304, 493
• GCF of 36, 758, 424
• GCF of 15, 751, 932
• GCF of 44, 235, 722
• GCF of 50, 256, 230

1. What is the GCF of 21, 165, 399?

Answer: GCF of 21, 165, 399 is 3.

2. How to Find the GCF of 21, 165, 399

Answer: Greatest Common Factor(GCF) of 21, 165, 399 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 165, 399) = 3.