Greatest Common Factor of 432, 255, 21

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

• Greatest Common Factor of 432, 255, 21 by common division method
• Greatest Common Factor of 432, 255, 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 432

List of positive integer factors of 432 that divides 432 without a remainder.

1,2,3,4,6,8,9,12,16,18,24,27,36,48,54,72,108,144,216,432

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 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 432,255,21 . The biggest common factor number is the GCF number.
So the greatest common factor 432,255,21 is 3.

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

• GCF of 912, 284, 55
• GCF of 743, 272, 29
• GCF of 913, 349, 27
• GCF of 382, 230, 48
• GCF of 654, 384, 93

1. What is the GCF of 432, 255, 21?

Answer: GCF of 432, 255, 21 is 3.

2. How to Find the GCF of 432, 255, 21

Answer: Greatest Common Factor(GCF) of 432, 255, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(432, 255, 21) = 3.