81253445

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4153}}^1$

素因数の和:4221

約数の個数: 32

約数和(自身を含む): 122825472

約数和(自身を除く): 41572027

約数列:

[1, 5, 7, 13, 35, 43, 65, 91, 215, 301, 455, 559, 1505, 2795, 3913, 4153, 19565, 20765, 29071, 53989, 145355, 178579, 269945, 377923, 892895, 1250053, 1889615, 2321527, 6250265, 11607635, 16250689, 81253445]

約数ペア:

[(1, 81253445), (5, 16250689), (7, 11607635), (13, 6250265), (35, 2321527), (43, 1889615), (65, 1250053), (91, 892895), (215, 377923), (301, 269945), (455, 178579), (559, 145355), (1505, 53989), (2795, 29071), (3913, 20765), (4153, 19565)]