19989838

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{2531}}^1$

素因数の和:2903

約数の個数: 16

約数和(自身を含む): 32814720

約数和(自身を除く): 12824882

約数列:

[1, 2, 11, 22, 359, 718, 2531, 3949, 5062, 7898, 27841, 55682, 908629, 1817258, 9994919, 19989838]

約数ペア:

[(1, 19989838), (2, 9994919), (11, 1817258), (22, 908629), (359, 55682), (718, 27841), (2531, 7898), (3949, 5062)]