Greatest Common Factor of 85, 40, 28, 39

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

• Greatest Common Factor of 85, 40, 28, 39 by common division method
• Greatest Common Factor of 85, 40, 28, 39 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 85

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

1,5,17,85

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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 39

List of positive integer factors of 39 that divides 39 without a remainder.

1,3,13,39

Greatest Common Factor

We found the factors 85,40,28,39 . The biggest common factor number is the GCF number.
So the greatest common factor 85,40,28,39 is 1.

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

• GCF of 10, 12, 60, 84
• GCF of 52, 47, 39, 69
• GCF of 36, 80, 39, 60
• GCF of 27, 64, 57, 32
• GCF of 31, 64, 16, 22

1. What is the GCF of 85, 40, 28, 39?

Answer: GCF of 85, 40, 28, 39 is 1.

2. How to Find the GCF of 85, 40, 28, 39

Answer: Greatest Common Factor(GCF) of 85, 40, 28, 39 = 1

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

Step 2: Then multiply all the prime factors GCF(85, 40, 28, 39) = 1.