The factors of the number 647,304,800 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 43, 50, 62, 80, 86, 100, 124, 155, 160, 172, 200, 215, 248, 310, 344, 400, 430, 496, 607, 620, 688, 775, 800, 860, 992, 1075, 1214, 1240, 1333, 1376, 1550, 1720, 2150, 2428, 2480, 2666, 3035, 3100, 3440, 4300, 4856, 4960, 5332, 6070, 6200, 6665, 6880, 8600, 9712, 10664, 12140, 12400, 13330, 15175, 17200, 18817, 19424, 21328, 24280, 24800, 26101, 26660, 30350, 33325, 34400, 37634, 42656, 48560, 52202, 53320, 60700, 66650, 75268, 94085, 97120, 104404, 106640, 121400, 130505, 133300, 150536, 188170, 208808, 213280, 242800, 261010, 266600, 301072, 376340, 417616, 470425, 485600, 522020, 533200, 602144, 652525, 752680, 809131, 835232, 940850, 1044040, 1066400, 1305050, 1505360, 1618262, 1881700, 2088080, 2610100, 3010720, 3236524, 3763400, 4045655, 4176160, 5220200, 6473048, 7526800, 8091310, 10440400, 12946096, 15053600, 16182620, 20228275, 20880800, 25892192, 32365240, 40456550, 64730480, 80913100, 129460960, 161826200, 323652400, 647304800.
If you add them up, you will get the total of 1,671,892,992.