The factors of the number 672,446,544 are: 1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 31, 33, 42, 44, 48, 56, 62, 66, 77, 84, 88, 93, 112, 124, 132, 154, 168, 176, 186, 217, 231, 248, 264, 308, 336, 341, 372, 434, 462, 496, 528, 616, 651, 682, 744, 868, 924, 1023, 1232, 1302, 1364, 1488, 1736, 1848, 2046, 2387, 2604, 2728, 3472, 3696, 4092, 4774, 5208, 5456, 5869, 7161, 8184, 9548, 10416, 11738, 14322, 16368, 17607, 19096, 23476, 28644, 35214, 38192, 41083, 46952, 57288, 64559, 70428, 82166, 93904, 114576, 123249, 129118, 140856, 164332, 181939, 193677, 246498, 258236, 281712, 328664, 363878, 387354, 451913, 492996, 516472, 545817, 657328, 727756, 774708, 903826, 985992, 1032944, 1091634, 1273573, 1355739, 1455512, 1549416, 1807652, 1971984, 2001329, 2183268, 2547146, 2711478, 2911024, 3098832, 3615304, 3820719, 4002658, 4366536, 5094292, 5422956, 6003987, 7230608, 7641438, 8005316, 8733072, 10188584, 10845912, 12007974, 14009303, 15282876, 16010632, 20377168, 21691824, 24015948, 28018606, 30565752, 32021264, 42027909, 48031896, 56037212, 61131504, 84055818, 96063792, 112074424, 168111636, 224148848, 336223272, 672446544.
If you add them up, you will get the total of 2,236,047,360.