# 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.