21591999

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{883}}^1$

素因数の和:932

約数の個数: 48

約数和(自身を含む): 38613120

約数和(自身を除く): 17021121

約数列:

[1, 3, 9, 11, 13, 19, 33, 39, 57, 99, 117, 143, 171, 209, 247, 429, 627, 741, 883, 1287, 1881, 2223, 2649, 2717, 7947, 8151, 9713, 11479, 16777, 24453, 29139, 34437, 50331, 87417, 103311, 126269, 150993, 184547, 218101, 378807, 553641, 654303, 1136421, 1660923, 1962909, 2399111, 7197333, 21591999]

約数ペア:

[(1, 21591999), (3, 7197333), (9, 2399111), (11, 1962909), (13, 1660923), (19, 1136421), (33, 654303), (39, 553641), (57, 378807), (99, 218101), (117, 184547), (143, 150993), (171, 126269), (209, 103311), (247, 87417), (429, 50331), (627, 34437), (741, 29139), (883, 24453), (1287, 16777), (1881, 11479), (2223, 9713), (2649, 8151), (2717, 7947)]