The factors of the number 1,518,660 are: 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 59, 60, 65, 66, 78, 90, 99, 110, 117, 118, 130, 132, 143, 156, 165, 177, 180, 195, 198, 220, 234, 236, 260, 286, 295, 330, 354, 390, 396, 429, 468, 495, 531, 572, 585, 590, 649, 660, 708, 715, 767, 780, 858, 885, 990, 1062, 1170, 1180, 1287, 1298, 1430, 1534, 1716, 1770, 1947, 1980, 2124, 2145, 2301, 2340, 2574, 2596, 2655, 2860, 3068, 3245, 3540, 3835, 3894, 4290, 4602, 5148, 5310, 5841, 6435, 6490, 6903, 7670, 7788, 8437, 8580, 9204, 9735, 10620, 11505, 11682, 12870, 12980, 13806, 15340, 16874, 19470, 23010, 23364, 25311, 25740, 27612, 29205, 33748, 34515, 38940, 42185, 46020, 50622, 58410, 69030, 75933, 84370, 101244, 116820, 126555, 138060, 151866, 168740, 253110, 303732, 379665, 506220, 759330, 1518660.
If you add them up, you will get the total of 1,518,663. Now subtract 1,518,660 to get 3,985,020