The factors of the number 8,628,660 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 29, 30, 36, 38, 45, 54, 57, 58, 60, 76, 87, 90, 95, 108, 114, 116, 135, 145, 171, 174, 180, 190, 228, 261, 270, 285, 290, 342, 348, 380, 435, 513, 522, 540, 551, 570, 580, 684, 783, 841, 855, 870, 1026, 1044, 1102, 1140, 1305, 1566, 1653, 1682, 1710, 1740, 2052, 2204, 2523, 2565, 2610, 2755, 3132, 3306, 3364, 3420, 3915, 4205, 4959, 5046, 5130, 5220, 5510, 6612, 7569, 7830, 8265, 8410, 9918, 10092, 10260, 11020, 12615, 14877, 15138, 15660, 15979, 16530, 16820, 19836, 22707, 24795, 25230, 29754, 30276, 31958, 33060, 37845, 45414, 47937, 49590, 50460, 59508, 63916, 74385, 75690, 79895, 90828, 95874, 99180, 113535, 143811, 148770, 151380, 159790, 191748, 227070, 239685, 287622, 297540, 319580, 431433, 454140, 479370, 575244, 719055, 862866, 958740, 1438110, 1725732, 2157165, 2876220, 4314330, 8628660.
If you add them up, you will get the total of 8,628,680. Now subtract 8,628,660 to get 20,636,940