8401287680

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{105863}}^1$

素因数の和:105917

約数の個数: 80

約数和(自身を含む): 20793383424

約数和(自身を除く): 12392095744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 39680, 79360, 105863, 211726, 423452, 529315, 846904, 1058630, 1693808, 2117260, 3281753, 3387616, 4234520, 6563506, 6775232, 8469040, 13127012, 13550464, 16408765, 16938080, 26254024, 27100928, 32817530, 33876160, 52508048, 54201856, 65635060, 67752320, 105016096, 131270120, 135504640, 210032192, 262540240, 271009280, 420064384, 525080480, 840128768, 1050160960, 1680257536, 2100321920, 4200643840, 8401287680]

約数ペア:

[(1, 8401287680), (2, 4200643840), (4, 2100321920), (5, 1680257536), (8, 1050160960), (10, 840128768), (16, 525080480), (20, 420064384), (31, 271009280), (32, 262540240), (40, 210032192), (62, 135504640), (64, 131270120), (80, 105016096), (124, 67752320), (128, 65635060), (155, 54201856), (160, 52508048), (248, 33876160), (256, 32817530), (310, 27100928), (320, 26254024), (496, 16938080), (512, 16408765), (620, 13550464), (640, 13127012), (992, 8469040), (1240, 6775232), (1280, 6563506), (1984, 4234520), (2480, 3387616), (2560, 3281753), (3968, 2117260), (4960, 1693808), (7936, 1058630), (9920, 846904), (15872, 529315), (19840, 423452), (39680, 211726), (79360, 105863)]