The factors of the number 505,423,440 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 71, 72, 80, 90, 120, 142, 144, 180, 213, 240, 284, 355, 360, 426, 568, 639, 710, 720, 852, 1065, 1136, 1278, 1420, 1704, 2130, 2556, 2840, 3195, 3408, 4260, 5112, 5680, 6390, 8520, 9887, 10224, 12780, 17040, 19774, 25560, 29661, 39548, 49435, 51120, 59322, 79096, 88983, 98870, 118644, 148305, 158192, 177966, 197740, 237288, 296610, 355932, 395480, 444915, 474576, 593220, 701977, 711864, 790960, 889830, 1186440, 1403954, 1423728, 1779660, 2105931, 2372880, 2807908, 3509885, 3559320, 4211862, 5615816, 6317793, 7019770, 7118640, 8423724, 10529655, 11231632, 12635586, 14039540, 16847448, 21059310, 25271172, 28079080, 31588965, 33694896, 42118620, 50542344, 56158160, 63177930, 84237240, 101084688, 126355860, 168474480, 252711720, 505423440.
If you add them up, you will get the total of 1,721,461,248.