648999

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^2$

素因数の和:108

約数の個数: 24

約数和(自身を含む): 1060080

約数和(自身を除く): 411081

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1677, 1849, 5031, 5547, 15093, 16641, 24037, 49923, 72111, 216333, 648999]

約数ペア:

[(1, 648999), (3, 216333), (9, 72111), (13, 49923), (27, 24037), (39, 16641), (43, 15093), (117, 5547), (129, 5031), (351, 1849), (387, 1677), (559, 1161)]