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420, 991, 21 Common Factors Calculator

Created By : Prasanna
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023

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 420, 991, 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

Common Factors of

Common Factors of 420,991,21

Given numbers are 420,991,21

To find the common factors of 420,991,21 we have to find the factors of every number and list the common in them.

Factors of 420

The factors of 420 are :

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 991

The factors of 991 are :

1,991

Factors of 21

The factors of 21 are :

1,3,7,21


Common Factors of 420,991,21 are 1

The Greatest Common Factor of 420,991,21 is 1.

Common Factors of Numbers Calculation Examples

Here are some samples of Common Factors of Numbers calculations.

FAQs on Common Factors

1. What are the common factors of 420, 991, 21?

The common factors of 420, 991, 21 are 1.