18685909

素因数分解:

${\mathrm{11}}^3\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:273

約数の個数: 16

約数和(自身を含む): 20905920

約数和(自身を除く): 2220011

約数列:

[1, 11, 101, 121, 139, 1111, 1331, 1529, 12221, 14039, 16819, 134431, 154429, 185009, 1698719, 18685909]

約数ペア:

[(1, 18685909), (11, 1698719), (101, 185009), (121, 154429), (139, 134431), (1111, 16819), (1331, 14039), (1529, 12221)]