The factors of the number 2,157,600 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 29, 30, 31, 32, 40, 48, 50, 58, 60, 62, 75, 80, 87, 93, 96, 100, 116, 120, 124, 145, 150, 155, 160, 174, 186, 200, 232, 240, 248, 290, 300, 310, 348, 372, 400, 435, 464, 465, 480, 496, 580, 600, 620, 696, 725, 744, 775, 800, 870, 899, 928, 930, 992, 1160, 1200, 1240, 1392, 1450, 1488, 1550, 1740, 1798, 1860, 2175, 2320, 2325, 2400, 2480, 2697, 2784, 2900, 2976, 3100, 3480, 3596, 3720, 4350, 4495, 4640, 4650, 4960, 5394, 5800, 6200, 6960, 7192, 7440, 8700, 8990, 9300, 10788, 11600, 12400, 13485, 13920, 14384, 14880, 17400, 17980, 18600, 21576, 22475, 23200, 24800, 26970, 28768, 34800, 35960, 37200, 43152, 44950, 53940, 67425, 69600, 71920, 74400, 86304, 89900, 107880, 134850, 143840, 179800, 215760, 269700, 359600, 431520, 539400, 719200, 1078800, 2157600.
If you add them up, you will get the total of 7,499,520.