Greatest Common Factor of 21, 420, 384

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

• Greatest Common Factor of 21, 420, 384 by common division method
• Greatest Common Factor of 21, 420, 384 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 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 384

List of positive integer factors of 384 that divides 384 without a remainder.

1,2,3,4,6,8,12,16,24,32,48,64,96,128,192,384

Greatest Common Factor

We found the factors 21,420,384 . The biggest common factor number is the GCF number.
So the greatest common factor 21,420,384 is 3.

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

• GCF of 88, 441, 875
• GCF of 14, 895, 471
• GCF of 77, 407, 960
• GCF of 69, 995, 389
• GCF of 54, 370, 386

1. What is the GCF of 21, 420, 384?

Answer: GCF of 21, 420, 384 is 3.

2. How to Find the GCF of 21, 420, 384

Answer: Greatest Common Factor(GCF) of 21, 420, 384 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 420, 384) = 3.