21346576

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 25793264

約数列:

[1, 2, 4, 8, 16, 19, 23, 38, 43, 46, 71, 76, 86, 92, 142, 152, 172, 184, 284, 304, 344, 368, 437, 568, 688, 817, 874, 989, 1136, 1349, 1633, 1634, 1748, 1978, 2698, 3053, 3266, 3268, 3496, 3956, 5396, 6106, 6532, 6536, 6992, 7912, 10792, 12212, 13064, 13072, 15824, 18791, 21584, 24424, 26128, 31027, 37582, 48848, 58007, 62054, 70219, 75164, 116014, 124108, 140438, 150328, 232028, 248216, 280876, 300656, 464056, 496432, 561752, 928112, 1123504, 1334161, 2668322, 5336644, 10673288, 21346576]

約数ペア:

[(1, 21346576), (2, 10673288), (4, 5336644), (8, 2668322), (16, 1334161), (19, 1123504), (23, 928112), (38, 561752), (43, 496432), (46, 464056), (71, 300656), (76, 280876), (86, 248216), (92, 232028), (142, 150328), (152, 140438), (172, 124108), (184, 116014), (284, 75164), (304, 70219), (344, 62054), (368, 58007), (437, 48848), (568, 37582), (688, 31027), (817, 26128), (874, 24424), (989, 21584), (1136, 18791), (1349, 15824), (1633, 13072), (1634, 13064), (1748, 12212), (1978, 10792), (2698, 7912), (3053, 6992), (3266, 6536), (3268, 6532), (3496, 6106), (3956, 5396)]