Q: What is the sum of all factors of the number 1,663,139 excluding 1,663,139?
A: 2,581
The factors of the number 1,663,139 are: 1, 1259, 1321, 1663139.
If you add them up, you will get the total of 1,663,141. Now subtract 1,663,139 to get 2,581