18518291

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:394

約数の個数: 16

約数和(自身を含む): 20756736

約数和(自身を除く): 2238445

約数列:

[1, 11, 71, 131, 181, 781, 1441, 1991, 9301, 12851, 23711, 102311, 141361, 260821, 1683481, 18518291]

約数ペア:

[(1, 18518291), (11, 1683481), (71, 260821), (131, 141361), (181, 102311), (781, 23711), (1441, 12851), (1991, 9301)]