Greatest Common Factor of 12, 28, 990

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

• Greatest Common Factor of 12, 28, 990 by common division method
• Greatest Common Factor of 12, 28, 990 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 2 = 2

Factors of 12

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

1,2,3,4,6,12

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 990

List of positive integer factors of 990 that divides 990 without a remainder.

1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990

Greatest Common Factor

We found the factors 12,28,990 . The biggest common factor number is the GCF number.
So the greatest common factor 12,28,990 is 2.

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

• GCF of 57, 87, 648
• GCF of 42, 55, 182
• GCF of 77, 87, 377
• GCF of 75, 95, 680
• GCF of 95, 92, 236

1. What is the GCF of 12, 28, 990?

Answer: GCF of 12, 28, 990 is 2.

2. How to Find the GCF of 12, 28, 990

Answer: Greatest Common Factor(GCF) of 12, 28, 990 = 2

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

Step 2: Then multiply all the prime factors GCF(12, 28, 990) = 2.