Greatest Common Factor of 21, 672, 660

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

• Greatest Common Factor of 21, 672, 660 by common division method
• Greatest Common Factor of 21, 672, 660 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 672

List of positive integer factors of 672 that divides 672 without a remainder.

1,2,3,4,6,7,8,12,14,16,21,24,28,32,42,48,56,84,96,112,168,224,336,672

Factors of 660

List of positive integer factors of 660 that divides 660 without a remainder.

1,2,3,4,5,6,10,11,12,15,20,22,30,33,44,55,60,66,110,132,165,220,330,660

Greatest Common Factor

We found the factors 21,672,660 . The biggest common factor number is the GCF number.
So the greatest common factor 21,672,660 is 3.

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

• GCF of 77, 203, 960
• GCF of 65, 904, 374
• GCF of 53, 268, 117
• GCF of 72, 806, 552
• GCF of 70, 523, 349

1. What is the GCF of 21, 672, 660?

Answer: GCF of 21, 672, 660 is 3.

2. How to Find the GCF of 21, 672, 660

Answer: Greatest Common Factor(GCF) of 21, 672, 660 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 672, 660) = 3.