18810209

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{90001}}^1$

素因数の和:90031

約数の個数: 8

約数和(自身を含む): 21600480

約数和(自身を除く): 2790271

約数列:

[1, 11, 19, 209, 90001, 990011, 1710019, 18810209]

約数ペア:

[(1, 18810209), (11, 1710019), (19, 990011), (209, 90001)]