The factors of the number 637,367,472 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 109, 112, 126, 144, 168, 218, 252, 327, 336, 436, 504, 654, 763, 872, 981, 1008, 1308, 1526, 1744, 1962, 2289, 2616, 3052, 3924, 4578, 5232, 5801, 6104, 6867, 7848, 9156, 11602, 12208, 13734, 15696, 17403, 18312, 23204, 27468, 34806, 36624, 40607, 46408, 52209, 54936, 69612, 81214, 92816, 104418, 109872, 121821, 139224, 162428, 208836, 243642, 278448, 324856, 365463, 417672, 487284, 632309, 649712, 730926, 835344, 974568, 1264618, 1461852, 1896927, 1949136, 2529236, 2923704, 3793854, 4426163, 5058472, 5690781, 5847408, 7587708, 8852326, 10116944, 11381562, 13278489, 15175416, 17704652, 22763124, 26556978, 30350832, 35409304, 39835467, 45526248, 53113956, 70818608, 79670934, 91052496, 106227912, 159341868, 212455824, 318683736, 637367472.
If you add them up, you will get the total of 637,367,473. Now subtract 637,367,472 to get 1,420,253,808