Greatest Common Factor of 42, 18, 20, 144

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

• Greatest Common Factor of 42, 18, 20, 144 by common division method
• Greatest Common Factor of 42, 18, 20, 144 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 2 = 2

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 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 144

List of positive integer factors of 144 that divides 144 without a remainder.

1,2,3,4,6,8,9,12,16,18,24,36,48,72,144

Greatest Common Factor

We found the factors 42,18,20,144 . The biggest common factor number is the GCF number.
So the greatest common factor 42,18,20,144 is 2.

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

• GCF of 73, 47, 77, 303
• GCF of 92, 15, 90, 459
• GCF of 42, 10, 48, 754
• GCF of 42, 97, 22, 684
• GCF of 97, 18, 40, 433

1. What is the GCF of 42, 18, 20, 144?

Answer: GCF of 42, 18, 20, 144 is 2.

2. How to Find the GCF of 42, 18, 20, 144

Answer: Greatest Common Factor(GCF) of 42, 18, 20, 144 = 2

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

Step 2: Then multiply all the prime factors GCF(42, 18, 20, 144) = 2.