678240081

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:687

約数の個数: 64

約数和(自身を含む): 1095494400

約数和(自身を除く): 417254319

約数列:

[1, 3, 9, 27, 29, 37, 41, 87, 111, 123, 261, 333, 369, 571, 783, 999, 1073, 1107, 1189, 1517, 1713, 3219, 3567, 4551, 5139, 9657, 10701, 13653, 15417, 16559, 21127, 23411, 28971, 32103, 40959, 43993, 49677, 63381, 70233, 131979, 149031, 190143, 210699, 395937, 447093, 570429, 612683, 632097, 678919, 866207, 1187811, 1838049, 2036757, 2598621, 5514147, 6110271, 7795863, 16542441, 18330813, 23387589, 25120003, 75360009, 226080027, 678240081]

約数ペア:

[(1, 678240081), (3, 226080027), (9, 75360009), (27, 25120003), (29, 23387589), (37, 18330813), (41, 16542441), (87, 7795863), (111, 6110271), (123, 5514147), (261, 2598621), (333, 2036757), (369, 1838049), (571, 1187811), (783, 866207), (999, 678919), (1073, 632097), (1107, 612683), (1189, 570429), (1517, 447093), (1713, 395937), (3219, 210699), (3567, 190143), (4551, 149031), (5139, 131979), (9657, 70233), (10701, 63381), (13653, 49677), (15417, 43993), (16559, 40959), (21127, 32103), (23411, 28971)]