Greatest Common Factor of 45, 42, 57, 855

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

• Greatest Common Factor of 45, 42, 57, 855 by common division method
• Greatest Common Factor of 45, 42, 57, 855 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

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 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 855

List of positive integer factors of 855 that divides 855 without a remainder.

1,3,5,9,15,19,45,57,95,171,285,855

Greatest Common Factor

We found the factors 45,42,57,855 . The biggest common factor number is the GCF number.
So the greatest common factor 45,42,57,855 is 3.

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

• GCF of 36, 10, 71, 980
• GCF of 14, 69, 48, 983
• GCF of 39, 42, 59, 543
• GCF of 46, 59, 31, 232
• GCF of 48, 58, 77, 484

1. What is the GCF of 45, 42, 57, 855?

Answer: GCF of 45, 42, 57, 855 is 3.

2. How to Find the GCF of 45, 42, 57, 855

Answer: Greatest Common Factor(GCF) of 45, 42, 57, 855 = 3

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

Step 2: Then multiply all the prime factors GCF(45, 42, 57, 855) = 3.