Greatest Common Factor of 45, 74, 20, 85

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

• Greatest Common Factor of 45, 74, 20, 85 by common division method
• Greatest Common Factor of 45, 74, 20, 85 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 45

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

1,3,5,9,15,45

Factors of 74

List of positive integer factors of 74 that divides 74 without a remainder.

1,2,37,74

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

Greatest Common Factor

We found the factors 45,74,20,85 . The biggest common factor number is the GCF number.
So the greatest common factor 45,74,20,85 is 1.

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

• GCF of 97, 41, 50, 80
• GCF of 32, 95, 55, 70
• GCF of 82, 38, 27, 97
• GCF of 65, 52, 69, 29
• GCF of 85, 40, 81, 14

1. What is the GCF of 45, 74, 20, 85?

Answer: GCF of 45, 74, 20, 85 is 1.

2. How to Find the GCF of 45, 74, 20, 85

Answer: Greatest Common Factor(GCF) of 45, 74, 20, 85 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 74, 20, 85) = 1.