Q: What is the sum of all factors of the number 428,139 excluding 428,139?
A: 216,501
The factors of the number 428,139 are: 1, 3, 9, 27, 101, 157, 303, 471, 909, 1413, 2727, 4239, 15857, 47571, 142713, 428139.
If you add them up, you will get the total of 428,355. Now subtract 428,139 to get 216,501