The greatest common factor for 130 would be 130.
Factors of 130
1, 2 , 5 ,10,13, 26, 65 and 130
A factor is a number that is multiplied with another produces a given number or expression. Lets look at factors of 16
1x16 = 16
2 x 8 = 16
The factors are 1,2,8,16. When we multiply them we get 16. Also each one of these factors divide into 16 evenly too.