18989531

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2186

約数の個数: 16

約数和(自身を含む): 22323840

約数和(自身を除く): 3334309

約数列:

[1, 11, 19, 43, 209, 473, 817, 2113, 8987, 23243, 40147, 90859, 441617, 999449, 1726321, 18989531]

約数ペア:

[(1, 18989531), (11, 1726321), (19, 999449), (43, 441617), (209, 90859), (473, 40147), (817, 23243), (2113, 8987)]