18881621

素因数分解:

${\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:436

約数の個数: 16

約数和(自身を含む): 21228480

約数和(自身を除く): 2346859

約数列:

[1, 11, 53, 139, 233, 583, 1529, 2563, 7367, 12349, 32387, 81037, 135839, 356257, 1716511, 18881621]

約数ペア:

[(1, 18881621), (11, 1716511), (53, 356257), (139, 135839), (233, 81037), (583, 32387), (1529, 12349), (2563, 7367)]