18001907

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5437}}^1$

素因数の和:5498

約数の個数: 16

約数和(自身を含む): 22970112

約数和(自身を除く): 4968205

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 5437, 38059, 59807, 233791, 418649, 1636537, 2571701, 18001907]

約数ペア:

[(1, 18001907), (7, 2571701), (11, 1636537), (43, 418649), (77, 233791), (301, 59807), (473, 38059), (3311, 5437)]