Greatest Common Factor of 72, 86, 70, 645

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

• Greatest Common Factor of 72, 86, 70, 645 by common division method
• Greatest Common Factor of 72, 86, 70, 645 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 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 86

List of positive integer factors of 86 that divides 86 without a remainder.

1,2,43,86

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 645

List of positive integer factors of 645 that divides 645 without a remainder.

1,3,5,15,43,129,215,645

Greatest Common Factor

We found the factors 72,86,70,645 . The biggest common factor number is the GCF number.
So the greatest common factor 72,86,70,645 is 1.

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

• GCF of 80, 37, 43, 949
• GCF of 20, 26, 51, 565
• GCF of 45, 78, 35, 535
• GCF of 59, 35, 38, 118
• GCF of 17, 19, 87, 526

1. What is the GCF of 72, 86, 70, 645?

Answer: GCF of 72, 86, 70, 645 is 1.

2. How to Find the GCF of 72, 86, 70, 645

Answer: Greatest Common Factor(GCF) of 72, 86, 70, 645 = 1

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

Step 2: Then multiply all the prime factors GCF(72, 86, 70, 645) = 1.