Q: What is the sum of all factors of the number 640,003 excluding 640,003?
A: 153,485
The factors of the number 640,003 are: 1, 7, 13, 91, 169, 541, 1183, 3787, 7033, 49231, 91429, 640003.
If you add them up, you will get the total of 640,156. Now subtract 640,003 to get 153,485