Just 1. Nothing else.
The factors of all of the numbers from 1 to 100 are all of the numbers from 1 to 50.
All the factors are 1.
1, 3, 43, 129 those are all the factors 1, 3, 43, 129 those are all the factors
The factors of all the numbers 1 through 30 include all the numbers 1 through 30.
The factors of 9 are 1, 3, and 9
The factors of 223 are: 1, 223
The factors of 211 are: 1, 211
The factors of 263 are 1 & 263
The factors of 17: 1, 17
The factors of 89 are 1 and 89
1 and 83 are the factors of 83.
The factors of 31 are: 1, 31