257657600

素因数分解:

$2^8\times 5^2\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:470

約数の個数: 108

約数和(自身を含む): 644792064

約数和(自身を除く): 387134464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 200, 254, 256, 317, 320, 400, 508, 634, 635, 640, 800, 1016, 1268, 1270, 1280, 1585, 1600, 2032, 2536, 2540, 3170, 3175, 3200, 4064, 5072, 5080, 6340, 6350, 6400, 7925, 8128, 10144, 10160, 12680, 12700, 15850, 16256, 20288, 20320, 25360, 25400, 31700, 32512, 40259, 40576, 40640, 50720, 50800, 63400, 80518, 81152, 81280, 101440, 101600, 126800, 161036, 162560, 201295, 202880, 203200, 253600, 322072, 402590, 405760, 406400, 507200, 644144, 805180, 812800, 1006475, 1014400, 1288288, 1610360, 2012950, 2028800, 2576576, 3220720, 4025900, 5153152, 6441440, 8051800, 10306304, 12882880, 16103600, 25765760, 32207200, 51531520, 64414400, 128828800, 257657600]

約数ペア:

[(1, 257657600), (2, 128828800), (4, 64414400), (5, 51531520), (8, 32207200), (10, 25765760), (16, 16103600), (20, 12882880), (25, 10306304), (32, 8051800), (40, 6441440), (50, 5153152), (64, 4025900), (80, 3220720), (100, 2576576), (127, 2028800), (128, 2012950), (160, 1610360), (200, 1288288), (254, 1014400), (256, 1006475), (317, 812800), (320, 805180), (400, 644144), (508, 507200), (634, 406400), (635, 405760), (640, 402590), (800, 322072), (1016, 253600), (1268, 203200), (1270, 202880), (1280, 201295), (1585, 162560), (1600, 161036), (2032, 126800), (2536, 101600), (2540, 101440), (3170, 81280), (3175, 81152), (3200, 80518), (4064, 63400), (5072, 50800), (5080, 50720), (6340, 40640), (6350, 40576), (6400, 40259), (7925, 32512), (8128, 31700), (10144, 25400), (10160, 25360), (12680, 20320), (12700, 20288), (15850, 16256)]