The factors of the number 405,243,552 are: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 19, 21, 24, 28, 32, 34, 38, 42, 48, 51, 56, 57, 68, 76, 84, 96, 102, 112, 114, 119, 133, 136, 152, 168, 204, 224, 228, 238, 266, 272, 304, 323, 336, 357, 399, 408, 456, 476, 532, 544, 608, 646, 672, 714, 798, 816, 912, 952, 969, 1064, 1292, 1428, 1596, 1632, 1824, 1867, 1904, 1938, 2128, 2261, 2584, 2856, 3192, 3734, 3808, 3876, 4256, 4522, 5168, 5601, 5712, 6384, 6783, 7468, 7752, 9044, 10336, 11202, 11424, 12768, 13069, 13566, 14936, 15504, 18088, 22404, 26138, 27132, 29872, 31008, 31739, 35473, 36176, 39207, 44808, 52276, 54264, 59744, 63478, 70946, 72352, 78414, 89616, 95217, 104552, 106419, 108528, 126956, 141892, 156828, 179232, 190434, 209104, 212838, 217056, 222173, 248311, 253912, 283784, 313656, 380868, 418208, 425676, 444346, 496622, 507824, 567568, 603041, 627312, 666519, 744933, 761736, 851352, 888692, 993244, 1015648, 1135136, 1206082, 1254624, 1333038, 1489866, 1523472, 1702704, 1777384, 1809123, 1986488, 2412164, 2666076, 2979732, 3046944, 3405408, 3554768, 3618246, 3972976, 4221287, 4824328, 5332152, 5959464, 7109536, 7236492, 7945952, 8442574, 9648656, 10664304, 11918928, 12663861, 14472984, 16885148, 19297312, 21328608, 23837856, 25327722, 28945968, 33770296, 50655444, 57891936, 67540592, 101310888, 135081184, 202621776, 405243552.
If you add them up, you will get the total of 1,355,719,680.