87640217

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{12433}}^1$

素因数の和:12512

約数の個数: 16

約数和(自身を含む): 107429760

約数和(自身を除く): 19789543

約数列:

[1, 7, 19, 53, 133, 371, 1007, 7049, 12433, 87031, 236227, 658949, 1653589, 4612643, 12520031, 87640217]

約数ペア:

[(1, 87640217), (7, 12520031), (19, 4612643), (53, 1653589), (133, 658949), (371, 236227), (1007, 87031), (7049, 12433)]