The factors of the number 20,288,268 are: 1, 2, 3, 4, 6, 7, 9, 11, 12, 13, 14, 18, 21, 22, 26, 28, 33, 36, 39, 42, 44, 52, 63, 66, 77, 78, 84, 91, 99, 117, 126, 132, 143, 154, 156, 182, 198, 231, 234, 252, 273, 286, 308, 364, 396, 429, 462, 468, 546, 563, 572, 693, 819, 858, 924, 1001, 1092, 1126, 1287, 1386, 1638, 1689, 1716, 2002, 2252, 2574, 2772, 3003, 3276, 3378, 3941, 4004, 5067, 5148, 6006, 6193, 6756, 7319, 7882, 9009, 10134, 11823, 12012, 12386, 14638, 15764, 18018, 18579, 20268, 21957, 23646, 24772, 29276, 35469, 36036, 37158, 43351, 43914, 47292, 51233, 55737, 65871, 70938, 74316, 80509, 86702, 87828, 102466, 111474, 130053, 131742, 141876, 153699, 161018, 173404, 204932, 222948, 241527, 260106, 263484, 307398, 322036, 390159, 461097, 483054, 520212, 563563, 614796, 724581, 780318, 922194, 966108, 1127126, 1449162, 1560636, 1690689, 1844388, 2254252, 2898324, 3381378, 5072067, 6762756, 10144134, 20288268.
If you add them up, you will get the total of 68,979,456.