Q: What is the sum of all factors of the number 399,280 excluding 399,280?
A: 743,504
The factors of the number 399,280 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 31, 35, 40, 46, 56, 62, 70, 80, 92, 112, 115, 124, 140, 155, 161, 184, 217, 230, 248, 280, 310, 322, 368, 434, 460, 496, 560, 620, 644, 713, 805, 868, 920, 1085, 1240, 1288, 1426, 1610, 1736, 1840, 2170, 2480, 2576, 2852, 3220, 3472, 3565, 4340, 4991, 5704, 6440, 7130, 8680, 9982, 11408, 12880, 14260, 17360, 19964, 24955, 28520, 39928, 49910, 57040, 79856, 99820, 199640, 399280.
If you add them up, you will get the total of 400,023. Now subtract 399,280 to get 743,504