The factors of the number 124,200,900 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 59, 60, 75, 90, 100, 118, 150, 177, 180, 225, 236, 295, 300, 354, 450, 531, 590, 708, 885, 900, 1062, 1180, 1475, 1770, 2124, 2339, 2655, 2950, 3540, 4425, 4678, 5310, 5900, 7017, 8850, 9356, 10620, 11695, 13275, 14034, 17700, 21051, 23390, 26550, 28068, 35085, 42102, 46780, 53100, 58475, 70170, 84204, 105255, 116950, 138001, 140340, 175425, 210510, 233900, 276002, 350850, 414003, 421020, 526275, 552004, 690005, 701700, 828006, 1052550, 1242009, 1380010, 1656012, 2070015, 2105100, 2484018, 2760020, 3450025, 4140030, 4968036, 6210045, 6900050, 8280060, 10350075, 12420090, 13800100, 20700150, 24840180, 31050225, 41400300, 62100450, 124200900.
If you add them up, you will get the total of 396,068,400.