19937140232

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{35491}}^1$

素因数の和:35634

約数の個数: 64

約数和(自身を含む): 40477916160

約数和(自身を除く): 20540775928

約数列:

[1, 2, 4, 8, 23, 43, 46, 71, 86, 92, 142, 172, 184, 284, 344, 568, 989, 1633, 1978, 3053, 3266, 3956, 6106, 6532, 7912, 12212, 13064, 24424, 35491, 70219, 70982, 140438, 141964, 280876, 283928, 561752, 816293, 1526113, 1632586, 2519861, 3052226, 3265172, 5039722, 6104452, 6530344, 10079444, 12208904, 20158888, 35100599, 57956803, 70201198, 108354023, 115913606, 140402396, 216708046, 231827212, 280804792, 433416092, 463654424, 866832184, 2492142529, 4984285058, 9968570116, 19937140232]

約数ペア:

[(1, 19937140232), (2, 9968570116), (4, 4984285058), (8, 2492142529), (23, 866832184), (43, 463654424), (46, 433416092), (71, 280804792), (86, 231827212), (92, 216708046), (142, 140402396), (172, 115913606), (184, 108354023), (284, 70201198), (344, 57956803), (568, 35100599), (989, 20158888), (1633, 12208904), (1978, 10079444), (3053, 6530344), (3266, 6104452), (3956, 5039722), (6106, 3265172), (6532, 3052226), (7912, 2519861), (12212, 1632586), (13064, 1526113), (24424, 816293), (35491, 561752), (70219, 283928), (70982, 280876), (140438, 141964)]