Greatest Common Factor of 138, 174, 21

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

• Greatest Common Factor of 138, 174, 21 by common division method
• Greatest Common Factor of 138, 174, 21 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 138

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

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

Factors of 174

List of positive integer factors of 174 that divides 174 without a remainder.

1,2,3,6,29,58,87,174

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Greatest Common Factor

We found the factors 138,174,21 . The biggest common factor number is the GCF number.
So the greatest common factor 138,174,21 is 3.

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

• GCF of 593, 722, 20
• GCF of 951, 792, 45
• GCF of 950, 714, 86
• GCF of 280, 519, 23
• GCF of 519, 339, 75

1. What is the GCF of 138, 174, 21?

Answer: GCF of 138, 174, 21 is 3.

2. How to Find the GCF of 138, 174, 21

Answer: Greatest Common Factor(GCF) of 138, 174, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(138, 174, 21) = 3.