20722559

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5888641

約数列:

[1, 11, 13, 19, 29, 143, 209, 247, 263, 319, 377, 551, 2717, 2893, 3419, 4147, 4997, 6061, 7163, 7627, 37609, 54967, 64961, 78793, 83897, 99151, 144913, 714571, 1090661, 1594043, 1883869, 20722559]

約数ペア:

[(1, 20722559), (11, 1883869), (13, 1594043), (19, 1090661), (29, 714571), (143, 144913), (209, 99151), (247, 83897), (263, 78793), (319, 64961), (377, 54967), (551, 37609), (2717, 7627), (2893, 7163), (3419, 6061), (4147, 4997)]