Greatest Common Factor of 78, 86, 57, 16, 138

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

• Greatest Common Factor of 78, 86, 57, 16, 138 by common division method
• Greatest Common Factor of 78, 86, 57, 16, 138 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 78

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

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

Factors of 86

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

1,2,43,86

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 78,86,57,16,138 . The biggest common factor number is the GCF number.
So the greatest common factor 78,86,57,16,138 is 1.

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

• GCF of 83, 40, 70, 76, 932
• GCF of 45, 37, 36, 55, 171
• GCF of 59, 58, 18, 86, 309
• GCF of 25, 65, 80, 35, 526
• GCF of 69, 94, 27, 66, 657

1. What is the GCF of 78, 86, 57, 16, 138?

Answer: GCF of 78, 86, 57, 16, 138 is 1.

2. How to Find the GCF of 78, 86, 57, 16, 138

Answer: Greatest Common Factor(GCF) of 78, 86, 57, 16, 138 = 1

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

Step 2: Then multiply all the prime factors GCF(78, 86, 57, 16, 138) = 1.