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Greatest Common Factor of 21, 28, 30, 98

GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 21, 28, 30, 98 i.e. 1 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 21, 28, 30, 98 is 1.

GCF(21, 28, 30, 98) = 1

GCF of 21, 28, 30, 98

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

GCF of:

Greatest Common Factor (GCF) of 21,28,30,98 By Common Division

∴ 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 28

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

1,2,4,7,14,28

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Greatest Common Factor

We found the factors 21,28,30,98 . The biggest common factor number is the GCF number.
So the greatest common factor 21,28,30,98 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 21, 28, 30, 98

1. What is the GCF of 21, 28, 30, 98?

Answer: GCF of 21, 28, 30, 98 is 1.

2. How to Find the GCF of 21, 28, 30, 98

Answer: Greatest Common Factor(GCF) of 21, 28, 30, 98 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 28, 30, 98) = 1.