The factors of the number 522,720 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 96, 99, 108, 110, 120, 121, 132, 135, 144, 160, 165, 176, 180, 198, 216, 220, 240, 242, 264, 270, 288, 297, 330, 352, 360, 363, 396, 432, 440, 480, 484, 495, 528, 540, 594, 605, 660, 720, 726, 792, 864, 880, 968, 990, 1056, 1080, 1089, 1188, 1210, 1320, 1440, 1452, 1485, 1584, 1760, 1815, 1936, 1980, 2160, 2178, 2376, 2420, 2640, 2904, 2970, 3168, 3267, 3630, 3872, 3960, 4320, 4356, 4752, 4840, 5280, 5445, 5808, 5940, 6534, 7260, 7920, 8712, 9504, 9680, 10890, 11616, 11880, 13068, 14520, 15840, 16335, 17424, 19360, 21780, 23760, 26136, 29040, 32670, 34848, 43560, 47520, 52272, 58080, 65340, 87120, 104544, 130680, 174240, 261360, 522720.
If you add them up, you will get the total of 2,010,960.