The factors of the number 13,421,980 are: 1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 38, 44, 52, 55, 65, 76, 95, 110, 130, 143, 169, 190, 209, 220, 247, 260, 286, 338, 361, 380, 418, 494, 572, 676, 715, 722, 836, 845, 988, 1045, 1235, 1430, 1444, 1690, 1805, 1859, 2090, 2470, 2717, 2860, 3211, 3380, 3610, 3718, 3971, 4180, 4693, 4940, 5434, 6422, 7220, 7436, 7942, 9295, 9386, 10868, 12844, 13585, 15884, 16055, 18590, 18772, 19855, 23465, 27170, 32110, 35321, 37180, 39710, 46930, 51623, 54340, 61009, 64220, 70642, 79420, 93860, 103246, 122018, 141284, 176605, 206492, 244036, 258115, 305045, 353210, 516230, 610090, 671099, 706420, 1032460, 1220180, 1342198, 2684396, 3355495, 6710990, 13421980.
If you add them up, you will get the total of 35,140,392.