The factors of the number 131,545,512 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 19, 21, 24, 27, 28, 36, 38, 42, 54, 56, 57, 63, 72, 76, 84, 108, 114, 126, 133, 152, 168, 171, 189, 216, 228, 241, 252, 266, 342, 361, 378, 399, 456, 482, 504, 513, 532, 684, 722, 723, 756, 798, 964, 1026, 1064, 1083, 1197, 1368, 1444, 1446, 1512, 1596, 1687, 1928, 2052, 2166, 2169, 2394, 2527, 2888, 2892, 3192, 3249, 3374, 3591, 4104, 4332, 4338, 4579, 4788, 5054, 5061, 5784, 6498, 6507, 6748, 7182, 7581, 8664, 8676, 9158, 9576, 9747, 10108, 10122, 12996, 13014, 13496, 13737, 14364, 15162, 15183, 17352, 18316, 19494, 20216, 20244, 22743, 25992, 26028, 27474, 28728, 30324, 30366, 32053, 36632, 38988, 40488, 41211, 45486, 45549, 52056, 54948, 60648, 60732, 64106, 68229, 77976, 82422, 87001, 90972, 91098, 96159, 109896, 121464, 123633, 128212, 136458, 164844, 174002, 181944, 182196, 192318, 247266, 256424, 261003, 272916, 288477, 329688, 348004, 364392, 384636, 494532, 522006, 545832, 576954, 609007, 696008, 769272, 783009, 865431, 989064, 1044012, 1153908, 1218014, 1566018, 1730862, 1827021, 2088024, 2307816, 2349027, 2436028, 3132036, 3461724, 3654042, 4698054, 4872056, 5481063, 6264072, 6923448, 7308084, 9396108, 10962126, 14616168, 16443189, 18792216, 21924252, 32886378, 43848504, 65772756, 131545512.
If you add them up, you will get the total of 442,569,600.