18979213

素因数分解:

${\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{1553}}^1$

素因数の和:1676

約数の個数: 12

約数和(自身を含む): 21081564

約数和(自身を除く): 2102351

約数列:

[1, 11, 101, 121, 1111, 1553, 12221, 17083, 156853, 187913, 1725383, 18979213]

約数ペア:

[(1, 18979213), (11, 1725383), (101, 187913), (121, 156853), (1111, 17083), (1553, 12221)]