Greatest Common Factor of 315, 162, 21

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

• Greatest Common Factor of 315, 162, 21 by common division method
• Greatest Common Factor of 315, 162, 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 315

List of positive integer factors of 315 that divides 315 without a remainder.

1,3,5,7,9,15,21,35,45,63,105,315

Factors of 162

List of positive integer factors of 162 that divides 162 without a remainder.

1,2,3,6,9,18,27,54,81,162

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 315,162,21 . The biggest common factor number is the GCF number.
So the greatest common factor 315,162,21 is 3.

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

• GCF of 365, 611, 95
• GCF of 478, 905, 61
• GCF of 215, 886, 18
• GCF of 690, 241, 20
• GCF of 891, 576, 74

1. What is the GCF of 315, 162, 21?

Answer: GCF of 315, 162, 21 is 3.

2. How to Find the GCF of 315, 162, 21

Answer: Greatest Common Factor(GCF) of 315, 162, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(315, 162, 21) = 3.