The factors of the number 2,521,680 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 79, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 158, 168, 190, 210, 228, 237, 240, 266, 280, 285, 304, 316, 336, 380, 395, 399, 420, 456, 474, 532, 553, 560, 570, 632, 665, 760, 790, 798, 840, 912, 948, 1064, 1106, 1140, 1185, 1264, 1330, 1501, 1520, 1580, 1596, 1659, 1680, 1896, 1995, 2128, 2212, 2280, 2370, 2660, 2765, 3002, 3160, 3192, 3318, 3792, 3990, 4424, 4503, 4560, 4740, 5320, 5530, 6004, 6320, 6384, 6636, 7505, 7980, 8295, 8848, 9006, 9480, 10507, 10640, 11060, 12008, 13272, 15010, 15960, 16590, 18012, 18960, 21014, 22120, 22515, 24016, 26544, 30020, 31521, 31920, 33180, 36024, 42028, 44240, 45030, 52535, 60040, 63042, 66360, 72048, 84056, 90060, 105070, 120080, 126084, 132720, 157605, 168112, 180120, 210140, 252168, 315210, 360240, 420280, 504336, 630420, 840560, 1260840, 2521680.
If you add them up, you will get the total of 9,523,200.