The factors of the number 280,462,056 are: 1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 21, 24, 28, 34, 42, 51, 56, 68, 84, 102, 119, 136, 168, 204, 238, 283, 347, 357, 408, 476, 566, 694, 714, 849, 952, 1041, 1132, 1388, 1428, 1698, 1981, 2082, 2264, 2429, 2776, 2856, 3396, 3962, 4164, 4811, 4858, 5899, 5943, 6792, 7287, 7924, 8328, 9622, 9716, 11798, 11886, 14433, 14574, 15848, 17697, 19244, 19432, 23596, 23772, 28866, 29148, 33677, 35394, 38488, 41293, 47192, 47544, 57732, 58296, 67354, 70788, 82586, 98201, 101031, 115464, 123879, 134708, 141576, 165172, 196402, 202062, 247758, 269416, 294603, 330344, 392804, 404124, 495516, 589206, 687407, 785608, 808248, 991032, 1178412, 1374814, 1669417, 2062221, 2356824, 2749628, 3338834, 4124442, 5008251, 5499256, 6677668, 8248884, 10016502, 11685919, 13355336, 16497768, 20033004, 23371838, 35057757, 40066008, 46743676, 70115514, 93487352, 140231028, 280462056.
If you add them up, you will get the total of 853,908,480.