Greatest Common Factor of 21, 306, 810

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

• Greatest Common Factor of 21, 306, 810 by common division method
• Greatest Common Factor of 21, 306, 810 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 306

List of positive integer factors of 306 that divides 306 without a remainder.

1,2,3,6,9,17,18,34,51,102,153,306

Factors of 810

List of positive integer factors of 810 that divides 810 without a remainder.

1,2,3,5,6,9,10,15,18,27,30,45,54,81,90,135,162,270,405,810

Greatest Common Factor

We found the factors 21,306,810 . The biggest common factor number is the GCF number.
So the greatest common factor 21,306,810 is 3.

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

• GCF of 93, 114, 659
• GCF of 75, 318, 884
• GCF of 35, 685, 815
• GCF of 69, 244, 809
• GCF of 55, 453, 125

1. What is the GCF of 21, 306, 810?

Answer: GCF of 21, 306, 810 is 3.

2. How to Find the GCF of 21, 306, 810

Answer: Greatest Common Factor(GCF) of 21, 306, 810 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 306, 810) = 3.