The factors of the number 258,171,408 are: 1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 27, 33, 36, 44, 48, 54, 66, 72, 88, 99, 108, 121, 132, 144, 176, 198, 216, 242, 264, 297, 363, 396, 432, 449, 484, 528, 594, 726, 792, 898, 968, 1089, 1188, 1331, 1347, 1452, 1584, 1796, 1936, 2178, 2376, 2662, 2694, 2904, 3267, 3592, 3993, 4041, 4356, 4752, 4939, 5324, 5388, 5808, 6534, 7184, 7986, 8082, 8712, 9878, 10648, 10776, 11979, 12123, 13068, 14817, 15972, 16164, 17424, 19756, 21296, 21552, 23958, 24246, 26136, 29634, 31944, 32328, 35937, 39512, 44451, 47916, 48492, 52272, 54329, 59268, 63888, 64656, 71874, 79024, 88902, 95832, 96984, 108658, 118536, 133353, 143748, 162987, 177804, 191664, 193968, 217316, 237072, 266706, 287496, 325974, 355608, 434632, 488961, 533412, 574992, 597619, 651948, 711216, 869264, 977922, 1066824, 1195238, 1303896, 1466883, 1792857, 1955844, 2133648, 2390476, 2607792, 2933766, 3585714, 3911688, 4780952, 5378571, 5867532, 7171428, 7823376, 9561904, 10757142, 11735064, 14342856, 16135713, 21514284, 23470128, 28685712, 32271426, 43028568, 64542852, 86057136, 129085704, 258171408.
If you add them up, you will get the total of 816,912,000.