The factors of the number 8,043,672 are: 1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 29, 39, 42, 52, 56, 58, 78, 84, 87, 91, 104, 116, 127, 156, 168, 174, 182, 203, 232, 254, 273, 312, 348, 364, 377, 381, 406, 508, 546, 609, 696, 728, 754, 762, 812, 889, 1016, 1092, 1131, 1218, 1508, 1524, 1624, 1651, 1778, 2184, 2262, 2436, 2639, 2667, 3016, 3048, 3302, 3556, 3683, 4524, 4872, 4953, 5278, 5334, 6604, 7112, 7366, 7917, 9048, 9906, 10556, 10668, 11049, 11557, 13208, 14732, 15834, 19812, 21112, 21336, 22098, 23114, 25781, 29464, 31668, 34671, 39624, 44196, 46228, 47879, 51562, 63336, 69342, 77343, 88392, 92456, 95758, 103124, 138684, 143637, 154686, 191516, 206248, 277368, 287274, 309372, 335153, 383032, 574548, 618744, 670306, 1005459, 1149096, 1340612, 2010918, 2681224, 4021836, 8043672.
If you add them up, you will get the total of 25,804,800.