21215697939

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{16267}}^1$

素因数の和:16584

約数の個数: 48

約数和(自身を含む): 33499065600

約数和(自身を除く): 12283367661

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 263, 551, 789, 1653, 2367, 4959, 4997, 7627, 14991, 16267, 22881, 44973, 48801, 68643, 144913, 146403, 309073, 434739, 471743, 927219, 1304217, 1415229, 2781657, 4245687, 4278221, 8963117, 12834663, 26889351, 38503989, 80668053, 81286199, 124068409, 243858597, 372205227, 731575791, 1116615681, 2357299771, 7071899313, 21215697939]

約数ペア:

[(1, 21215697939), (3, 7071899313), (9, 2357299771), (19, 1116615681), (29, 731575791), (57, 372205227), (87, 243858597), (171, 124068409), (261, 81286199), (263, 80668053), (551, 38503989), (789, 26889351), (1653, 12834663), (2367, 8963117), (4959, 4278221), (4997, 4245687), (7627, 2781657), (14991, 1415229), (16267, 1304217), (22881, 927219), (44973, 471743), (48801, 434739), (68643, 309073), (144913, 146403)]