The factors of the number 1,624,860 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 59, 60, 68, 81, 85, 90, 102, 108, 118, 135, 153, 162, 170, 177, 180, 204, 236, 255, 270, 295, 306, 324, 340, 354, 405, 459, 510, 531, 540, 590, 612, 708, 765, 810, 885, 918, 1003, 1020, 1062, 1180, 1377, 1530, 1593, 1620, 1770, 1836, 2006, 2124, 2295, 2655, 2754, 3009, 3060, 3186, 3540, 4012, 4590, 4779, 5015, 5310, 5508, 6018, 6372, 6885, 7965, 9027, 9180, 9558, 10030, 10620, 12036, 13770, 15045, 15930, 18054, 19116, 20060, 23895, 27081, 27540, 30090, 31860, 36108, 45135, 47790, 54162, 60180, 81243, 90270, 95580, 108324, 135405, 162486, 180540, 270810, 324972, 406215, 541620, 812430, 1624860.
If you add them up, you will get the total of 5,488,560.