18991621

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 22075200

約数和(自身を除く): 3083579

約数列:

[1, 11, 19, 89, 209, 979, 1021, 1691, 11231, 18601, 19399, 90869, 213389, 999559, 1726511, 18991621]

約数ペア:

[(1, 18991621), (11, 1726511), (19, 999559), (89, 213389), (209, 90869), (979, 19399), (1021, 18601), (1691, 11231)]