The factors of the number 123,112,320 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 37, 40, 48, 60, 64, 74, 80, 96, 111, 120, 128, 148, 160, 185, 192, 222, 240, 296, 320, 370, 384, 444, 480, 555, 592, 640, 740, 888, 960, 1110, 1184, 1480, 1733, 1776, 1920, 2220, 2368, 2960, 3466, 3552, 4440, 4736, 5199, 5920, 6932, 7104, 8665, 8880, 10398, 11840, 13864, 14208, 17330, 17760, 20796, 23680, 25995, 27728, 34660, 35520, 41592, 51990, 55456, 64121, 69320, 71040, 83184, 103980, 110912, 128242, 138640, 166368, 192363, 207960, 221824, 256484, 277280, 320605, 332736, 384726, 415920, 512968, 554560, 641210, 665472, 769452, 831840, 961815, 1025936, 1109120, 1282420, 1538904, 1663680, 1923630, 2051872, 2564840, 3077808, 3327360, 3847260, 4103744, 5129680, 6155616, 7694520, 8207488, 10259360, 12311232, 15389040, 20518720, 24622464, 30778080, 41037440, 61556160, 123112320.
If you add them up, you will get the total of 403,259,040.