661554881

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{12421}}^1$

素因数の和:12692

約数の個数: 16

約数和(自身を含む): 757543248

約数和(自身を除く): 95988367

約数列:

[1, 13, 17, 221, 241, 3133, 4097, 12421, 53261, 161473, 211157, 2745041, 2993461, 38914993, 50888837, 661554881]

約数ペア:

[(1, 661554881), (13, 50888837), (17, 38914993), (221, 2993461), (241, 2745041), (3133, 211157), (4097, 161473), (12421, 53261)]