The factors of the number 13,131,720 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 193, 210, 216, 243, 252, 270, 280, 315, 324, 360, 378, 386, 405, 420, 486, 504, 540, 567, 579, 630, 648, 756, 772, 810, 840, 945, 965, 972, 1080, 1134, 1158, 1215, 1260, 1351, 1512, 1544, 1620, 1701, 1737, 1890, 1930, 1944, 2268, 2316, 2430, 2520, 2702, 2835, 2895, 3240, 3402, 3474, 3780, 3860, 4053, 4536, 4632, 4860, 5211, 5404, 5670, 5790, 6755, 6804, 6948, 7560, 7720, 8106, 8505, 8685, 9720, 10422, 10808, 11340, 11580, 12159, 13510, 13608, 13896, 15633, 16212, 17010, 17370, 20265, 20844, 22680, 23160, 24318, 26055, 27020, 31266, 32424, 34020, 34740, 36477, 40530, 41688, 46899, 48636, 52110, 54040, 60795, 62532, 68040, 69480, 72954, 78165, 81060, 93798, 97272, 104220, 109431, 121590, 125064, 145908, 156330, 162120, 182385, 187596, 208440, 218862, 234495, 243180, 291816, 312660, 328293, 364770, 375192, 437724, 468990, 486360, 547155, 625320, 656586, 729540, 875448, 937980, 1094310, 1313172, 1459080, 1641465, 1875960, 2188620, 2626344, 3282930, 4377240, 6565860, 13131720.
If you add them up, you will get the total of 50,843,520.