Greatest Common Factor of 18, 390, 660

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

• Greatest Common Factor of 18, 390, 660 by common division method
• Greatest Common Factor of 18, 390, 660 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 x 3 = 6

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Factors of 660

List of positive integer factors of 660 that divides 660 without a remainder.

1,2,3,4,5,6,10,11,12,15,20,22,30,33,44,55,60,66,110,132,165,220,330,660

Greatest Common Factor

We found the factors 18,390,660 . The biggest common factor number is the GCF number.
So the greatest common factor 18,390,660 is 6.

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

• GCF of 46, 886, 991
• GCF of 87, 616, 925
• GCF of 14, 156, 153
• GCF of 99, 445, 443
• GCF of 31, 365, 117

1. What is the GCF of 18, 390, 660?

Answer: GCF of 18, 390, 660 is 6.

2. How to Find the GCF of 18, 390, 660

Answer: Greatest Common Factor(GCF) of 18, 390, 660 = 6

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

Step 2: Then multiply all the prime factors GCF(18, 390, 660) = 6.