The factors of the number 8,320,158 are: 1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 23, 27, 29, 33, 42, 46, 54, 58, 63, 66, 69, 77, 81, 87, 99, 126, 138, 154, 161, 162, 174, 189, 198, 203, 207, 231, 253, 261, 297, 319, 322, 378, 406, 414, 462, 483, 506, 522, 567, 594, 609, 621, 638, 667, 693, 759, 783, 891, 957, 966, 1134, 1218, 1242, 1334, 1386, 1449, 1518, 1566, 1771, 1782, 1827, 1863, 1914, 2001, 2079, 2233, 2277, 2349, 2871, 2898, 3542, 3654, 3726, 4002, 4158, 4347, 4466, 4554, 4669, 4698, 5313, 5481, 5742, 6003, 6237, 6699, 6831, 7337, 8613, 8694, 9338, 10626, 10962, 12006, 12474, 13041, 13398, 13662, 14007, 14674, 15939, 16443, 17226, 18009, 20097, 20493, 22011, 25839, 26082, 28014, 31878, 32886, 36018, 40194, 40986, 42021, 44022, 47817, 51359, 51678, 54027, 60291, 66033, 84042, 95634, 102718, 108054, 120582, 126063, 132066, 143451, 154077, 180873, 198099, 252126, 286902, 308154, 361746, 378189, 396198, 462231, 594297, 756378, 924462, 1188594, 1386693, 2773386, 4160079, 8320158.
If you add them up, you will get the total of 25,090,560.