399995430400

素因数分解:

$2^9\times 5^2\times {\mathrm{31}}^1\times {\mathrm{677}}^1\times {\mathrm{1489}}^1$

素因数の和:2225

約数の個数: 240

約数和(自身を含む): 1025187419520

約数和(自身を除く): 625191989120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 200, 248, 256, 310, 320, 400, 496, 512, 620, 640, 677, 775, 800, 992, 1240, 1280, 1354, 1489, 1550, 1600, 1984, 2480, 2560, 2708, 2978, 3100, 3200, 3385, 3968, 4960, 5416, 5956, 6200, 6400, 6770, 7445, 7936, 9920, 10832, 11912, 12400, 12800, 13540, 14890, 15872, 16925, 19840, 20987, 21664, 23824, 24800, 27080, 29780, 33850, 37225, 39680, 41974, 43328, 46159, 47648, 49600, 54160, 59560, 67700, 74450, 79360, 83948, 86656, 92318, 95296, 99200, 104935, 108320, 119120, 135400, 148900, 167896, 173312, 184636, 190592, 198400, 209870, 216640, 230795, 238240, 270800, 297800, 335792, 346624, 369272, 381184, 396800, 419740, 433280, 461590, 476480, 524675, 541600, 595600, 671584, 738544, 762368, 839480, 866560, 923180, 952960, 1008053, 1049350, 1083200, 1153975, 1191200, 1343168, 1477088, 1678960, 1733120, 1846360, 1905920, 2016106, 2098700, 2166400, 2307950, 2382400, 2686336, 2954176, 3357920, 3692720, 3811840, 4032212, 4197400, 4332800, 4615900, 4764800, 5040265, 5372672, 5908352, 6715840, 7385440, 8064424, 8394800, 8665600, 9231800, 9529600, 10080530, 10745344, 11816704, 13431680, 14770880, 16128848, 16789600, 18463600, 19059200, 20161060, 23633408, 25201325, 26863360, 29541760, 31249643, 32257696, 33579200, 36927200, 40322120, 50402650, 53726720, 59083520, 62499286, 64515392, 67158400, 73854400, 80644240, 100805300, 118167040, 124998572, 129030784, 134316800, 147708800, 156248215, 161288480, 201610600, 249997144, 258061568, 268633600, 295417600, 312496430, 322576960, 403221200, 499994288, 516123136, 590835200, 624992860, 645153920, 781241075, 806442400, 999988576, 1249985720, 1290307840, 1562482150, 1612884800, 1999977152, 2499971440, 2580615680, 3124964300, 3225769600, 3999954304, 4999942880, 6249928600, 6451539200, 7999908608, 9999885760, 12499857200, 12903078400, 15999817216, 19999771520, 24999714400, 39999543040, 49999428800, 79999086080, 99998857600, 199997715200, 399995430400]

約数ペア:

[(1, 399995430400), (2, 199997715200), (4, 99998857600), (5, 79999086080), (8, 49999428800), (10, 39999543040), (16, 24999714400), (20, 19999771520), (25, 15999817216), (31, 12903078400), (32, 12499857200), (40, 9999885760), (50, 7999908608), (62, 6451539200), (64, 6249928600), (80, 4999942880), (100, 3999954304), (124, 3225769600), (128, 3124964300), (155, 2580615680), (160, 2499971440), (200, 1999977152), (248, 1612884800), (256, 1562482150), (310, 1290307840), (320, 1249985720), (400, 999988576), (496, 806442400), (512, 781241075), (620, 645153920), (640, 624992860), (677, 590835200), (775, 516123136), (800, 499994288), (992, 403221200), (1240, 322576960), (1280, 312496430), (1354, 295417600), (1489, 268633600), (1550, 258061568), (1600, 249997144), (1984, 201610600), (2480, 161288480), (2560, 156248215), (2708, 147708800), (2978, 134316800), (3100, 129030784), (3200, 124998572), (3385, 118167040), (3968, 100805300), (4960, 80644240), (5416, 73854400), (5956, 67158400), (6200, 64515392), (6400, 62499286), (6770, 59083520), (7445, 53726720), (7936, 50402650), (9920, 40322120), (10832, 36927200), (11912, 33579200), (12400, 32257696), (12800, 31249643), (13540, 29541760), (14890, 26863360), (15872, 25201325), (16925, 23633408), (19840, 20161060), (20987, 19059200), (21664, 18463600), (23824, 16789600), (24800, 16128848), (27080, 14770880), (29780, 13431680), (33850, 11816704), (37225, 10745344), (39680, 10080530), (41974, 9529600), (43328, 9231800), (46159, 8665600), (47648, 8394800), (49600, 8064424), (54160, 7385440), (59560, 6715840), (67700, 5908352), (74450, 5372672), (79360, 5040265), (83948, 4764800), (86656, 4615900), (92318, 4332800), (95296, 4197400), (99200, 4032212), (104935, 3811840), (108320, 3692720), (119120, 3357920), (135400, 2954176), (148900, 2686336), (167896, 2382400), (173312, 2307950), (184636, 2166400), (190592, 2098700), (198400, 2016106), (209870, 1905920), (216640, 1846360), (230795, 1733120), (238240, 1678960), (270800, 1477088), (297800, 1343168), (335792, 1191200), (346624, 1153975), (369272, 1083200), (381184, 1049350), (396800, 1008053), (419740, 952960), (433280, 923180), (461590, 866560), (476480, 839480), (524675, 762368), (541600, 738544), (595600, 671584)]