The factors of the number 20,501,000 are: 1, 2, 4, 5, 8, 10, 13, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 83, 95, 100, 104, 125, 130, 152, 166, 190, 200, 247, 250, 260, 325, 332, 380, 415, 475, 494, 500, 520, 650, 664, 760, 830, 950, 988, 1000, 1079, 1235, 1300, 1577, 1625, 1660, 1900, 1976, 2075, 2158, 2375, 2470, 2600, 3154, 3250, 3320, 3800, 4150, 4316, 4750, 4940, 5395, 6175, 6308, 6500, 7885, 8300, 8632, 9500, 9880, 10375, 10790, 12350, 12616, 13000, 15770, 16600, 19000, 20501, 20750, 21580, 24700, 26975, 30875, 31540, 39425, 41002, 41500, 43160, 49400, 53950, 61750, 63080, 78850, 82004, 83000, 102505, 107900, 123500, 134875, 157700, 164008, 197125, 205010, 215800, 247000, 269750, 315400, 394250, 410020, 512525, 539500, 788500, 820040, 1025050, 1079000, 1577000, 2050100, 2562625, 4100200, 5125250, 10250500, 20501000.
If you add them up, you will get the total of 55,036,800.