Greatest Common Factor of 42, 40, 90

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

• Greatest Common Factor of 42, 40, 90 by common division method
• Greatest Common Factor of 42, 40, 90 with matching the biggest common factor

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∴ 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 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 42,40,90 . The biggest common factor number is the GCF number.
So the greatest common factor 42,40,90 is 2.

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

• GCF of 42, 69, 41
• GCF of 47, 46, 30
• GCF of 35, 82, 65
• GCF of 73, 48, 11
• GCF of 29, 13, 73

1. What is the GCF of 42, 40, 90?

Answer: GCF of 42, 40, 90 is 2.

2. How to Find the GCF of 42, 40, 90

Answer: Greatest Common Factor(GCF) of 42, 40, 90 = 2

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

Step 2: Then multiply all the prime factors GCF(42, 40, 90) = 2.