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, 21, 209 i.e. 1 largest integer that divides all the numbers equally.
Greatest common factor (GCF) of 28, 21, 209 is 1.
GCF(28, 21, 209) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways
∴ 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 21
List of positive integer factors of 21 that divides 21 without a remainder.
1,3,7,21
Factors of 209
List of positive integer factors of 209 that divides 209 without a remainder.
1,11,19,209
Greatest Common Factor
We found the factors 28,21,209 . The biggest common factor number is the GCF number.
So the greatest common factor 28,21,209 is 1.
Here are some samples of GCF of two or more Numbers calculations.
1. What is the GCF of 28, 21, 209?
Answer: GCF of 28, 21, 209 is 1.
2. How to Find the GCF of 28, 21, 209
Answer: Greatest Common Factor(GCF) of 28, 21, 209 = 1
Step 1: Divide all the numbers with common prime numbers having remainder zero.
Step 2: Then multiply all the prime factors GCF(28, 21, 209) = 1.