18731999

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4517}}^1$

素因数の和:4570

約数の個数: 16

約数和(自身を含む): 22770720

約数和(自身を除く): 4038721

約数列:

[1, 11, 13, 29, 143, 319, 377, 4147, 4517, 49687, 58721, 130993, 645931, 1440923, 1702909, 18731999]

約数ペア:

[(1, 18731999), (11, 1702909), (13, 1440923), (29, 645931), (143, 130993), (319, 58721), (377, 49687), (4147, 4517)]