Greatest Common Factor of 21, 489, 408

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

• Greatest Common Factor of 21, 489, 408 by common division method
• Greatest Common Factor of 21, 489, 408 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 489

List of positive integer factors of 489 that divides 489 without a remainder.

1,3,163,489

Factors of 408

List of positive integer factors of 408 that divides 408 without a remainder.

1,2,3,4,6,8,12,17,24,34,51,68,102,136,204,408

Greatest Common Factor

We found the factors 21,489,408 . The biggest common factor number is the GCF number.
So the greatest common factor 21,489,408 is 3.

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

• GCF of 39, 332, 315
• GCF of 79, 889, 106
• GCF of 19, 805, 952
• GCF of 80, 180, 266
• GCF of 48, 629, 521

1. What is the GCF of 21, 489, 408?

Answer: GCF of 21, 489, 408 is 3.

2. How to Find the GCF of 21, 489, 408

Answer: Greatest Common Factor(GCF) of 21, 489, 408 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 489, 408) = 3.