The factors of the number 11,521,620 are: 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 23, 30, 33, 36, 44, 45, 46, 55, 60, 66, 69, 90, 92, 99, 110, 115, 121, 132, 138, 165, 180, 198, 207, 220, 230, 242, 253, 276, 330, 345, 363, 396, 414, 460, 484, 495, 506, 529, 605, 660, 690, 726, 759, 828, 990, 1012, 1035, 1058, 1089, 1210, 1265, 1380, 1452, 1518, 1587, 1815, 1980, 2070, 2116, 2178, 2277, 2420, 2530, 2645, 2783, 3036, 3174, 3630, 3795, 4140, 4356, 4554, 4761, 5060, 5290, 5445, 5566, 5819, 6348, 7260, 7590, 7935, 8349, 9108, 9522, 10580, 10890, 11132, 11385, 11638, 13915, 15180, 15870, 16698, 17457, 19044, 21780, 22770, 23276, 23805, 25047, 27830, 29095, 31740, 33396, 34914, 41745, 45540, 47610, 50094, 52371, 55660, 58190, 64009, 69828, 83490, 87285, 95220, 100188, 104742, 116380, 125235, 128018, 166980, 174570, 192027, 209484, 250470, 256036, 261855, 320045, 349140, 384054, 500940, 523710, 576081, 640090, 768108, 960135, 1047420, 1152162, 1280180, 1920270, 2304324, 2880405, 3840540, 5760810, 11521620.
If you add them up, you will get the total of 40,157,754.