2905990321

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{905011}}^1$

素因数の和:905056

約数の個数: 12

約数和(自身を含む): 3312343920

約数和(自身を除く): 406353599

約数列:

[1, 13, 19, 169, 247, 3211, 905011, 11765143, 17195209, 152946859, 223537717, 2905990321]

約数ペア:

[(1, 2905990321), (13, 223537717), (19, 152946859), (169, 17195209), (247, 11765143), (3211, 905011)]