Greatest Common Factor of 17, 20, 85, 32, 18

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

• Greatest Common Factor of 17, 20, 85, 32, 18 by common division method
• Greatest Common Factor of 17, 20, 85, 32, 18 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 20

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

1,2,4,5,10,20

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 32

List of positive integer factors of 32 that divides 32 without a remainder.

1,2,4,8,16,32

Factors of 18

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

1,2,3,6,9,18

Greatest Common Factor

We found the factors 17,20,85,32,18 . The biggest common factor number is the GCF number.
So the greatest common factor 17,20,85,32,18 is 1.

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

• GCF of 81, 36, 22, 98, 68
• GCF of 91, 53, 29, 85, 49
• GCF of 56, 58, 93, 68, 10
• GCF of 48, 65, 18, 47, 79
• GCF of 20, 37, 38, 67, 87

1. What is the GCF of 17, 20, 85, 32, 18?

Answer: GCF of 17, 20, 85, 32, 18 is 1.

2. How to Find the GCF of 17, 20, 85, 32, 18

Answer: Greatest Common Factor(GCF) of 17, 20, 85, 32, 18 = 1

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

Step 2: Then multiply all the prime factors GCF(17, 20, 85, 32, 18) = 1.