Q: What is the sum of all factors of the number 28,721,875 excluding 28,721,875?
A: 15,900,269
The factors of the number 28,721,875 are: 1, 5, 7, 13, 25, 35, 65, 91, 101, 125, 175, 325, 455, 505, 625, 707, 875, 1313, 1625, 2275, 2525, 3125, 3535, 4375, 6565, 8125, 9191, 11375, 12625, 17675, 21875, 32825, 40625, 45955, 56875, 63125, 88375, 164125, 229775, 284375, 315625, 441875, 820625, 1148875, 2209375, 4103125, 5744375, 28721875.
If you add them up, you will get the total of 28,721,890. Now subtract 28,721,875 to get 15,900,269