Greatest Common Factor of 28, 71, 18, 5, 49

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

• Greatest Common Factor of 28, 71, 18, 5, 49 by common division method
• Greatest Common Factor of 28, 71, 18, 5, 49 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 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 18

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

1,2,3,6,9,18

Factors of 5

List of positive integer factors of 5 that divides 5 without a remainder.

1,5

Factors of 49

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

1,7,49

Greatest Common Factor

We found the factors 28,71,18,5,49 . The biggest common factor number is the GCF number.
So the greatest common factor 28,71,18,5,49 is 1.

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

• GCF of 60, 63, 66, 8, 26
• GCF of 47, 27, 85, 7, 32
• GCF of 14, 58, 47, 1, 25
• GCF of 63, 11, 43, 9, 66
• GCF of 27, 84, 63, 5, 21

1. What is the GCF of 28, 71, 18, 5, 49?

Answer: GCF of 28, 71, 18, 5, 49 is 1.

2. How to Find the GCF of 28, 71, 18, 5, 49

Answer: Greatest Common Factor(GCF) of 28, 71, 18, 5, 49 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 71, 18, 5, 49) = 1.