Greatest Common Factor of 42, 39, 561

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

• Greatest Common Factor of 42, 39, 561 by common division method
• Greatest Common Factor of 42, 39, 561 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 39

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

1,3,13,39

Factors of 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Greatest Common Factor

We found the factors 42,39,561 . The biggest common factor number is the GCF number.
So the greatest common factor 42,39,561 is 3.

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

• GCF of 76, 96, 338
• GCF of 50, 91, 645
• GCF of 93, 41, 776
• GCF of 95, 83, 234
• GCF of 15, 18, 224

1. What is the GCF of 42, 39, 561?

Answer: GCF of 42, 39, 561 is 3.

2. How to Find the GCF of 42, 39, 561

Answer: Greatest Common Factor(GCF) of 42, 39, 561 = 3

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

Step 2: Then multiply all the prime factors GCF(42, 39, 561) = 3.