Q: What is the sum of all factors of the number 15,440 excluding 15,440?
A: 20,644
The factors of the number 15,440 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1544, 1930, 3088, 3860, 7720, 15440.
If you add them up, you will get the total of 15,460. Now subtract 15,440 to get 20,644