The factors of the number 2,606,520 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 29, 30, 35, 40, 42, 56, 58, 60, 70, 84, 87, 105, 107, 116, 120, 140, 145, 168, 174, 203, 210, 214, 232, 280, 290, 321, 348, 406, 420, 428, 435, 535, 580, 609, 642, 696, 749, 812, 840, 856, 870, 1015, 1070, 1160, 1218, 1284, 1498, 1605, 1624, 1740, 2030, 2140, 2247, 2436, 2568, 2996, 3045, 3103, 3210, 3480, 3745, 4060, 4280, 4494, 4872, 5992, 6090, 6206, 6420, 7490, 8120, 8988, 9309, 11235, 12180, 12412, 12840, 14980, 15515, 17976, 18618, 21721, 22470, 24360, 24824, 29960, 31030, 37236, 43442, 44940, 46545, 62060, 65163, 74472, 86884, 89880, 93090, 108605, 124120, 130326, 173768, 186180, 217210, 260652, 325815, 372360, 434420, 521304, 651630, 868840, 1303260, 2606520.
If you add them up, you will get the total of 9,331,200.