The factors of the number 1,438,800 are: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 25, 30, 33, 40, 44, 48, 50, 55, 60, 66, 75, 80, 88, 100, 109, 110, 120, 132, 150, 165, 176, 200, 218, 220, 240, 264, 275, 300, 327, 330, 400, 436, 440, 528, 545, 550, 600, 654, 660, 825, 872, 880, 1090, 1100, 1199, 1200, 1308, 1320, 1635, 1650, 1744, 2180, 2200, 2398, 2616, 2640, 2725, 3270, 3300, 3597, 4360, 4400, 4796, 5232, 5450, 5995, 6540, 6600, 7194, 8175, 8720, 9592, 10900, 11990, 13080, 13200, 14388, 16350, 17985, 19184, 21800, 23980, 26160, 28776, 29975, 32700, 35970, 43600, 47960, 57552, 59950, 65400, 71940, 89925, 95920, 119900, 130800, 143880, 179850, 239800, 287760, 359700, 479600, 719400, 1438800.
If you add them up, you will get the total of 5,074,080.