164939840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1279}}^1$

素因数の和:1340

約数の個数: 112

約数和(自身を含む): 436961280

約数和(自身を除く): 272021440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 806, 832, 992, 1040, 1240, 1279, 1612, 1984, 2015, 2080, 2480, 2558, 3224, 4030, 4160, 4960, 5116, 6395, 6448, 8060, 9920, 10232, 12790, 12896, 16120, 16627, 20464, 25580, 25792, 32240, 33254, 39649, 40928, 51160, 64480, 66508, 79298, 81856, 83135, 102320, 128960, 133016, 158596, 166270, 198245, 204640, 266032, 317192, 332540, 396490, 409280, 515437, 532064, 634384, 665080, 792980, 1030874, 1064128, 1268768, 1330160, 1585960, 2061748, 2537536, 2577185, 2660320, 3171920, 4123496, 5154370, 5320640, 6343840, 8246992, 10308740, 12687680, 16493984, 20617480, 32987968, 41234960, 82469920, 164939840]

約数ペア:

[(1, 164939840), (2, 82469920), (4, 41234960), (5, 32987968), (8, 20617480), (10, 16493984), (13, 12687680), (16, 10308740), (20, 8246992), (26, 6343840), (31, 5320640), (32, 5154370), (40, 4123496), (52, 3171920), (62, 2660320), (64, 2577185), (65, 2537536), (80, 2061748), (104, 1585960), (124, 1330160), (130, 1268768), (155, 1064128), (160, 1030874), (208, 792980), (248, 665080), (260, 634384), (310, 532064), (320, 515437), (403, 409280), (416, 396490), (496, 332540), (520, 317192), (620, 266032), (806, 204640), (832, 198245), (992, 166270), (1040, 158596), (1240, 133016), (1279, 128960), (1612, 102320), (1984, 83135), (2015, 81856), (2080, 79298), (2480, 66508), (2558, 64480), (3224, 51160), (4030, 40928), (4160, 39649), (4960, 33254), (5116, 32240), (6395, 25792), (6448, 25580), (8060, 20464), (9920, 16627), (10232, 16120), (12790, 12896)]