Q: What is the sum of all factors of the number 1,284,280 excluding 1,284,280?
A: 1,643,960
The factors of the number 1,284,280 are: 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 331, 388, 485, 662, 776, 970, 1324, 1655, 1940, 2648, 3310, 3880, 6620, 13240, 32107, 64214, 128428, 160535, 256856, 321070, 642140, 1284280.
If you add them up, you will get the total of 1,284,281. Now subtract 1,284,280 to get 1,643,960