Q: What is the sum of all factors of the number 65,440 excluding 65,440?
A: 89,540
The factors of the number 65,440 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 409, 818, 1636, 2045, 3272, 4090, 6544, 8180, 13088, 16360, 32720, 65440.
If you add them up, you will get the total of 65,529. Now subtract 65,440 to get 89,540