The factors of the number 258,456,520 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 67, 70, 92, 115, 134, 140, 161, 184, 230, 268, 280, 322, 335, 460, 469, 536, 599, 644, 670, 805, 920, 938, 1198, 1288, 1340, 1541, 1610, 1876, 2345, 2396, 2680, 2995, 3082, 3220, 3752, 4193, 4690, 4792, 5990, 6164, 6440, 7705, 8386, 9380, 10787, 11980, 12328, 13777, 15410, 16772, 18760, 20965, 21574, 23960, 27554, 30820, 33544, 40133, 41930, 43148, 53935, 55108, 61640, 68885, 80266, 83860, 86296, 96439, 107870, 110216, 137770, 160532, 167720, 192878, 200665, 215740, 275540, 280931, 321064, 385756, 401330, 431480, 482195, 551080, 561862, 771512, 802660, 923059, 964390, 1123724, 1404655, 1605320, 1846118, 1928780, 2247448, 2809310, 3692236, 3857560, 4615295, 5618620, 6461413, 7384472, 9230590, 11237240, 12922826, 18461180, 25845652, 32307065, 36922360, 51691304, 64614130, 129228260, 258456520.
If you add them up, you will get the total of 705,024,000.