Greatest Common Factor of 28, 90, 81, 49

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023


GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 28, 90, 81, 49 i.e. 1 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 28, 90, 81, 49 is 1.

GCF(28, 90, 81, 49) = 1

GCF of 28, 90, 81, 49

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

GCF of:

Greatest Common Factor of 28,90,81,49

GCF of 28,90,81,49 is 1

∴ GCF of numbers is 1 because of no common factors present between them.

Greatest Common Factor (GCF) By Matching Biggest Common Factor Method

Factors of 28

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

1,2,4,7,14,28

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 81

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

1,3,9,27,81

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 28,90,81,49 . The biggest common factor number is the GCF number.
So the greatest common factor 28,90,81,49 is 1.

GCF of two or more Numbers Calculation Examples

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

Frequently Asked Questions on GCF of 28, 90, 81, 49

1. What is the GCF of 28, 90, 81, 49?

Answer: GCF of 28, 90, 81, 49 is 1.

2. How to Find the GCF of 28, 90, 81, 49

Answer: Greatest Common Factor(GCF) of 28, 90, 81, 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, 90, 81, 49) = 1.