81771440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2339}}^1$

素因数の和:2394

約数の個数: 80

約数和(自身を含む): 208915200

約数和(自身を除く): 127143760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 368, 380, 437, 460, 760, 874, 920, 1520, 1748, 1840, 2185, 2339, 3496, 4370, 4678, 6992, 8740, 9356, 11695, 17480, 18712, 23390, 34960, 37424, 44441, 46780, 53797, 88882, 93560, 107594, 177764, 187120, 215188, 222205, 268985, 355528, 430376, 444410, 537970, 711056, 860752, 888820, 1022143, 1075940, 1777640, 2044286, 2151880, 3555280, 4088572, 4303760, 5110715, 8177144, 10221430, 16354288, 20442860, 40885720, 81771440]

約数ペア:

[(1, 81771440), (2, 40885720), (4, 20442860), (5, 16354288), (8, 10221430), (10, 8177144), (16, 5110715), (19, 4303760), (20, 4088572), (23, 3555280), (38, 2151880), (40, 2044286), (46, 1777640), (76, 1075940), (80, 1022143), (92, 888820), (95, 860752), (115, 711056), (152, 537970), (184, 444410), (190, 430376), (230, 355528), (304, 268985), (368, 222205), (380, 215188), (437, 187120), (460, 177764), (760, 107594), (874, 93560), (920, 88882), (1520, 53797), (1748, 46780), (1840, 44441), (2185, 37424), (2339, 34960), (3496, 23390), (4370, 18712), (4678, 17480), (6992, 11695), (8740, 9356)]