48
156
1, 3, 9, 11, 33, 99 156
1 + 3 + 9 + 11 + 33 + 99 = 156
The sum of all the integers between 1 and 99 inclusive is 4950.
The sum of all odd numbers 1 through 99 is 9,801.
All the common factors of 99 and 11 are: 1 and 11 .
The sum of all the positive factors of 12 is 28.
2500
1,3,9,11,33,99
The factors of 99 are: 1, 3, 9, 11, 33, and 99 .
The sum of the positive whole-number factors of 30 is 72.