81990436

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{839}}^1\times {\mathrm{2221}}^1$

素因数の和:3075

約数の個数: 24

約数和(自身を含む): 156784320

約数和(自身を除く): 74793884

約数列:

[1, 2, 4, 11, 22, 44, 839, 1678, 2221, 3356, 4442, 8884, 9229, 18458, 24431, 36916, 48862, 97724, 1863419, 3726838, 7453676, 20497609, 40995218, 81990436]

約数ペア:

[(1, 81990436), (2, 40995218), (4, 20497609), (11, 7453676), (22, 3726838), (44, 1863419), (839, 97724), (1678, 48862), (2221, 36916), (3356, 24431), (4442, 18458), (8884, 9229)]