The factors of the number 121,303,224 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 49, 54, 56, 63, 72, 73, 84, 98, 108, 126, 146, 147, 157, 168, 189, 196, 216, 219, 252, 292, 294, 314, 378, 392, 438, 441, 471, 504, 511, 584, 588, 628, 657, 756, 876, 882, 942, 1022, 1099, 1176, 1256, 1314, 1323, 1413, 1512, 1533, 1752, 1764, 1884, 1971, 2044, 2198, 2628, 2646, 2826, 3066, 3297, 3528, 3577, 3768, 3942, 4088, 4239, 4396, 4599, 5256, 5292, 5652, 6132, 6594, 7154, 7693, 7884, 8478, 8792, 9198, 9891, 10584, 10731, 11304, 11461, 12264, 13188, 13797, 14308, 15386, 15768, 16956, 18396, 19782, 21462, 22922, 23079, 26376, 27594, 28616, 29673, 30772, 32193, 33912, 34383, 36792, 39564, 42924, 45844, 46158, 55188, 59346, 61544, 64386, 68766, 69237, 79128, 80227, 85848, 91688, 92316, 96579, 103149, 110376, 118692, 128772, 137532, 138474, 160454, 184632, 193158, 206298, 207711, 237384, 240681, 257544, 275064, 276948, 309447, 320908, 386316, 412596, 415422, 481362, 553896, 561589, 618894, 641816, 722043, 772632, 825192, 830844, 962724, 1123178, 1237788, 1444086, 1661688, 1684767, 1925448, 2166129, 2246356, 2475576, 2888172, 3369534, 4332258, 4492712, 5054301, 5776344, 6739068, 8664516, 10108602, 13478136, 15162903, 17329032, 20217204, 30325806, 40434408, 60651612, 121303224.
If you add them up, you will get the total of 399,866,400.