A whole number which is a factor of two or more numbers is referred to as a common factor. To find the Common Factors of 15, 28, 21 we can either Common Factors Calculator or follow the below provided steps.
Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345
Given numbers are 15,28,21
To find the common factors of 15,28,21 we have to find the factors of every number and list the common in them.
Factors of 15
The factors of 15 are :
1,3,5,15
Factors of 28
The factors of 28 are :
1,2,4,7,14,28
Factors of 21
The factors of 21 are :
1,3,7,21
Common Factors of 15,28,21 are 1
The Greatest Common Factor of 15,28,21 is 1.
Here are some samples of Common Factors of Numbers calculations.
1. What are the common factors of 15, 28, 21?
The common factors of 15, 28, 21 are 1.