Greatest Common Factor of 42, 51, 15, 636

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

• Greatest Common Factor of 42, 51, 15, 636 by common division method
• Greatest Common Factor of 42, 51, 15, 636 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 51

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

1,3,17,51

Factors of 15

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

1,3,5,15

Factors of 636

List of positive integer factors of 636 that divides 636 without a remainder.

1,2,3,4,6,12,53,106,159,212,318,636

Greatest Common Factor

We found the factors 42,51,15,636 . The biggest common factor number is the GCF number.
So the greatest common factor 42,51,15,636 is 3.

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

• GCF of 15, 63, 88, 765
• GCF of 20, 73, 19, 546
• GCF of 74, 35, 72, 399
• GCF of 86, 97, 66, 139
• GCF of 69, 86, 72, 875

1. What is the GCF of 42, 51, 15, 636?

Answer: GCF of 42, 51, 15, 636 is 3.

2. How to Find the GCF of 42, 51, 15, 636

Answer: Greatest Common Factor(GCF) of 42, 51, 15, 636 = 3

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

Step 2: Then multiply all the prime factors GCF(42, 51, 15, 636) = 3.