A single number cannot have a common factor because "common" refers to factors that two or more numbers have in common. You have only one number.
30 is a factor of 150 so 30 is the greatest common factor of 30 and 150
Since 30 is a factor of 60, and the largest possible factor of 30 is 30, the greatest common factor is 30.
The greatest common factor (GCF) of 20 and 30 is 10.
The greatest common factor of 30 and 39 is 3.
Since 30 is a factor of 60, all of its factors are common.
The greatest common factor of 7 and 30 is 1.
The greatest common factor of 30 , 50 = 10
Since 15 is a factor of 30, all of its factors are common.
The greatest common factor of 30 , 60 = 30
Since 30 is a factor of 90, all of its factors are common.
The greatest common factor of 30 and 49 is 1. This is because 30 and 49 are prime to each other;that is, they only have one factor common to both of them. And that factor is 1.
What is the greatest common factor shared by 100 and 30?