Greatest Common Factor of 18, 15, 39, 138

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

• Greatest Common Factor of 18, 15, 39, 138 by common division method
• Greatest Common Factor of 18, 15, 39, 138 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 18

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

1,2,3,6,9,18

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 18,15,39,138 . The biggest common factor number is the GCF number.
So the greatest common factor 18,15,39,138 is 3.

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

• GCF of 95, 55, 84, 133
• GCF of 77, 89, 11, 599
• GCF of 63, 43, 55, 121
• GCF of 49, 31, 38, 786
• GCF of 92, 33, 45, 946

1. What is the GCF of 18, 15, 39, 138?

Answer: GCF of 18, 15, 39, 138 is 3.

2. How to Find the GCF of 18, 15, 39, 138

Answer: Greatest Common Factor(GCF) of 18, 15, 39, 138 = 3

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

Step 2: Then multiply all the prime factors GCF(18, 15, 39, 138) = 3.