Greatest Common Factor of 18, 78, 49, 56

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

• Greatest Common Factor of 18, 78, 49, 56 by common division method
• Greatest Common Factor of 18, 78, 49, 56 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 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

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 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Greatest Common Factor

We found the factors 18,78,49,56 . The biggest common factor number is the GCF number.
So the greatest common factor 18,78,49,56 is 1.

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

• GCF of 24, 73, 39, 35
• GCF of 45, 11, 96, 25
• GCF of 86, 67, 10, 10
• GCF of 75, 66, 65, 83
• GCF of 45, 70, 20, 76

1. What is the GCF of 18, 78, 49, 56?

Answer: GCF of 18, 78, 49, 56 is 1.

2. How to Find the GCF of 18, 78, 49, 56

Answer: Greatest Common Factor(GCF) of 18, 78, 49, 56 = 1

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

Step 2: Then multiply all the prime factors GCF(18, 78, 49, 56) = 1.