The factors of the number 455,400 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 23, 24, 25, 30, 33, 36, 40, 44, 45, 46, 50, 55, 60, 66, 69, 72, 75, 88, 90, 92, 99, 100, 110, 115, 120, 132, 138, 150, 165, 180, 184, 198, 200, 207, 220, 225, 230, 253, 264, 275, 276, 300, 330, 345, 360, 396, 414, 440, 450, 460, 495, 506, 550, 552, 575, 600, 660, 690, 759, 792, 825, 828, 900, 920, 990, 1012, 1035, 1100, 1150, 1265, 1320, 1380, 1518, 1650, 1656, 1725, 1800, 1980, 2024, 2070, 2200, 2277, 2300, 2475, 2530, 2760, 3036, 3300, 3450, 3795, 3960, 4140, 4554, 4600, 4950, 5060, 5175, 6072, 6325, 6600, 6900, 7590, 8280, 9108, 9900, 10120, 10350, 11385, 12650, 13800, 15180, 18216, 18975, 19800, 20700, 22770, 25300, 30360, 37950, 41400, 45540, 50600, 56925, 75900, 91080, 113850, 151800, 227700, 455400.
If you add them up, you will get the total of 1,740,960.