Greatest Common Factor of 15, 10, 39, 70

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

• Greatest Common Factor of 15, 10, 39, 70 by common division method
• Greatest Common Factor of 15, 10, 39, 70 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 39

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

1,3,13,39

Factors of 70

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

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

Greatest Common Factor

We found the factors 15,10,39,70 . The biggest common factor number is the GCF number.
So the greatest common factor 15,10,39,70 is 1.

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

• GCF of 68, 11, 37, 31
• GCF of 18, 99, 31, 37
• GCF of 46, 82, 37, 23
• GCF of 93, 41, 57, 77
• GCF of 57, 14, 45, 92

1. What is the GCF of 15, 10, 39, 70?

Answer: GCF of 15, 10, 39, 70 is 1.

2. How to Find the GCF of 15, 10, 39, 70

Answer: Greatest Common Factor(GCF) of 15, 10, 39, 70 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 10, 39, 70) = 1.