Greatest Common Factor of 45, 82, 78, 15

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

• Greatest Common Factor of 45, 82, 78, 15 by common division method
• Greatest Common Factor of 45, 82, 78, 15 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 82

List of positive integer factors of 82 that divides 82 without a remainder.

1,2,41,82

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 15

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

1,3,5,15

Greatest Common Factor

We found the factors 45,82,78,15 . The biggest common factor number is the GCF number.
So the greatest common factor 45,82,78,15 is 1.

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

• GCF of 42, 59, 17, 67
• GCF of 60, 19, 86, 55
• GCF of 91, 82, 47, 53
• GCF of 43, 24, 10, 45
• GCF of 38, 20, 70, 63

1. What is the GCF of 45, 82, 78, 15?

Answer: GCF of 45, 82, 78, 15 is 1.

2. How to Find the GCF of 45, 82, 78, 15

Answer: Greatest Common Factor(GCF) of 45, 82, 78, 15 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 82, 78, 15) = 1.