20288979

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2011}}^1$

素因数の和:2095

約数の個数: 24

約数和(自身を含む): 31387200

約数和(自身を除く): 11098221

約数列:

[1, 3, 9, 19, 57, 59, 171, 177, 531, 1121, 2011, 3363, 6033, 10089, 18099, 38209, 114627, 118649, 343881, 355947, 1067841, 2254331, 6762993, 20288979]

約数ペア:

[(1, 20288979), (3, 6762993), (9, 2254331), (19, 1067841), (57, 355947), (59, 343881), (171, 118649), (177, 114627), (531, 38209), (1121, 18099), (2011, 10089), (3363, 6033)]