1989221

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9001}}^1$

素因数の和:9031

約数の個数: 8

約数和(自身を含む): 2268504

約数和(自身を除く): 279283

約数列:

[1, 13, 17, 221, 9001, 117013, 153017, 1989221]

約数ペア:

[(1, 1989221), (13, 153017), (17, 117013), (221, 9001)]