The factors of the number 488,400 are: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 25, 30, 33, 37, 40, 44, 48, 50, 55, 60, 66, 74, 75, 80, 88, 100, 110, 111, 120, 132, 148, 150, 165, 176, 185, 200, 220, 222, 240, 264, 275, 296, 300, 330, 370, 400, 407, 440, 444, 528, 550, 555, 592, 600, 660, 740, 814, 825, 880, 888, 925, 1100, 1110, 1200, 1221, 1320, 1480, 1628, 1650, 1776, 1850, 2035, 2200, 2220, 2442, 2640, 2775, 2960, 3256, 3300, 3700, 4070, 4400, 4440, 4884, 5550, 6105, 6512, 6600, 7400, 8140, 8880, 9768, 10175, 11100, 12210, 13200, 14800, 16280, 19536, 20350, 22200, 24420, 30525, 32560, 40700, 44400, 48840, 61050, 81400, 97680, 122100, 162800, 244200, 488400.
If you add them up, you will get the total of 488,401. Now subtract 488,400 to get 1,264,464