Q: What is the sum of all factors of the number 257,420 excluding 257,420?
A: 294,628
The factors of the number 257,420 are: 1, 2, 4, 5, 10, 20, 61, 122, 211, 244, 305, 422, 610, 844, 1055, 1220, 2110, 4220, 12871, 25742, 51484, 64355, 128710, 257420.
If you add them up, you will get the total of 257,714. Now subtract 257,420 to get 294,628