Greatest Common Factor of 28, 51, 71, 81

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

• Greatest Common Factor of 28, 51, 71, 81 by common division method
• Greatest Common Factor of 28, 51, 71, 81 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 71

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

1,71

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Greatest Common Factor

We found the factors 28,51,71,81 . The biggest common factor number is the GCF number.
So the greatest common factor 28,51,71,81 is 1.

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

• GCF of 81, 49, 48, 14
• GCF of 31, 57, 38, 53
• GCF of 87, 50, 42, 18
• GCF of 60, 93, 49, 98
• GCF of 90, 25, 68, 72

1. What is the GCF of 28, 51, 71, 81?

Answer: GCF of 28, 51, 71, 81 is 1.

2. How to Find the GCF of 28, 51, 71, 81

Answer: Greatest Common Factor(GCF) of 28, 51, 71, 81 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 51, 71, 81) = 1.