The factors of the number 1,264,800 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 25, 30, 31, 32, 34, 40, 48, 50, 51, 60, 62, 68, 75, 80, 85, 93, 96, 100, 102, 120, 124, 136, 150, 155, 160, 170, 186, 200, 204, 240, 248, 255, 272, 300, 310, 340, 372, 400, 408, 425, 465, 480, 496, 510, 527, 544, 600, 620, 680, 744, 775, 800, 816, 850, 930, 992, 1020, 1054, 1200, 1240, 1275, 1360, 1488, 1550, 1581, 1632, 1700, 1860, 2040, 2108, 2325, 2400, 2480, 2550, 2635, 2720, 2976, 3100, 3162, 3400, 3720, 4080, 4216, 4650, 4960, 5100, 5270, 6200, 6324, 6800, 7440, 7905, 8160, 8432, 9300, 10200, 10540, 12400, 12648, 13175, 13600, 14880, 15810, 16864, 18600, 20400, 21080, 24800, 25296, 26350, 31620, 37200, 39525, 40800, 42160, 50592, 52700, 63240, 74400, 79050, 84320, 105400, 126480, 158100, 210800, 252960, 316200, 421600, 632400, 1264800.
If you add them up, you will get the total of 4,499,712.