Greatest Common Factor of 420, 51, 39

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

• Greatest Common Factor of 420, 51, 39 by common division method
• Greatest Common Factor of 420, 51, 39 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 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 39

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

1,3,13,39

Greatest Common Factor

We found the factors 420,51,39 . The biggest common factor number is the GCF number.
So the greatest common factor 420,51,39 is 3.

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

• GCF of 280, 31, 82
• GCF of 640, 85, 47
• GCF of 109, 35, 80
• GCF of 865, 30, 88
• GCF of 251, 35, 26

1. What is the GCF of 420, 51, 39?

Answer: GCF of 420, 51, 39 is 3.

2. How to Find the GCF of 420, 51, 39

Answer: Greatest Common Factor(GCF) of 420, 51, 39 = 3

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

Step 2: Then multiply all the prime factors GCF(420, 51, 39) = 3.