The factors of the number 1,625,400 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 25, 27, 28, 30, 35, 36, 40, 42, 43, 45, 50, 54, 56, 60, 63, 70, 72, 75, 84, 86, 90, 100, 105, 108, 120, 126, 129, 135, 140, 150, 168, 172, 175, 180, 189, 200, 210, 215, 216, 225, 252, 258, 270, 280, 300, 301, 315, 344, 350, 360, 378, 387, 420, 430, 450, 504, 516, 525, 540, 600, 602, 630, 645, 675, 700, 756, 774, 840, 860, 900, 903, 945, 1032, 1050, 1075, 1080, 1161, 1204, 1260, 1290, 1350, 1400, 1505, 1512, 1548, 1575, 1720, 1800, 1806, 1890, 1935, 2100, 2150, 2322, 2408, 2520, 2580, 2700, 2709, 3010, 3096, 3150, 3225, 3612, 3780, 3870, 4200, 4300, 4515, 4644, 4725, 5160, 5400, 5418, 5805, 6020, 6300, 6450, 7224, 7525, 7560, 7740, 8127, 8600, 9030, 9288, 9450, 9675, 10836, 11610, 12040, 12600, 12900, 13545, 15050, 15480, 16254, 18060, 18900, 19350, 21672, 22575, 23220, 25800, 27090, 29025, 30100, 32508, 36120, 37800, 38700, 40635, 45150, 46440, 54180, 58050, 60200, 65016, 67725, 77400, 81270, 90300, 108360, 116100, 135450, 162540, 180600, 203175, 232200, 270900, 325080, 406350, 541800, 812700, 1625400.
If you add them up, you will get the total of 6,547,200.