Q: What is the sum of all factors of the number 1,663,221 excluding 1,663,221?
A: 871,243
The factors of the number 1,663,221 are: 1, 3, 7, 21, 79201, 237603, 554407, 1663221.
If you add them up, you will get the total of 1,664,092. Now subtract 1,663,221 to get 871,243