Greatest Common Factor of 80, 18, 40, 90

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

• Greatest Common Factor of 80, 18, 40, 90 by common division method
• Greatest Common Factor of 80, 18, 40, 90 with matching the biggest common factor

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

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 18

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

1,2,3,6,9,18

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 80,18,40,90 . The biggest common factor number is the GCF number.
So the greatest common factor 80,18,40,90 is 2.

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

• GCF of 74, 48, 82, 87
• GCF of 77, 11, 35, 28
• GCF of 99, 92, 14, 67
• GCF of 10, 79, 15, 21
• GCF of 91, 31, 75, 20

1. What is the GCF of 80, 18, 40, 90?

Answer: GCF of 80, 18, 40, 90 is 2.

2. How to Find the GCF of 80, 18, 40, 90

Answer: Greatest Common Factor(GCF) of 80, 18, 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(80, 18, 40, 90) = 2.