Q: What is the sum of all factors of the number 309,880 excluding 309,880?
A: 404,360
The factors of the number 309,880 are: 1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 127, 244, 254, 305, 488, 508, 610, 635, 1016, 1220, 1270, 2440, 2540, 5080, 7747, 15494, 30988, 38735, 61976, 77470, 154940, 309880.
If you add them up, you will get the total of 310,284. Now subtract 309,880 to get 404,360