Greatest Common Factor of 21, 90, 12, 906

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

• Greatest Common Factor of 21, 90, 12, 906 by common division method
• Greatest Common Factor of 21, 90, 12, 906 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 906

List of positive integer factors of 906 that divides 906 without a remainder.

1,2,3,6,151,302,453,906

Greatest Common Factor

We found the factors 21,90,12,906 . The biggest common factor number is the GCF number.
So the greatest common factor 21,90,12,906 is 3.

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

• GCF of 37, 85, 38, 399
• GCF of 46, 74, 73, 615
• GCF of 71, 86, 13, 767
• GCF of 27, 42, 99, 711
• GCF of 18, 79, 40, 998

1. What is the GCF of 21, 90, 12, 906?

Answer: GCF of 21, 90, 12, 906 is 3.

2. How to Find the GCF of 21, 90, 12, 906

Answer: Greatest Common Factor(GCF) of 21, 90, 12, 906 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 90, 12, 906) = 3.