20395427

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 24243840

約数和(自身を除く): 3848413

約数列:

[1, 13, 17, 31, 169, 221, 229, 403, 527, 2873, 2977, 3893, 5239, 6851, 7099, 38701, 50609, 89063, 92287, 120683, 657917, 1199731, 1568879, 20395427]

約数ペア:

[(1, 20395427), (13, 1568879), (17, 1199731), (31, 657917), (169, 120683), (221, 92287), (229, 89063), (403, 50609), (527, 38701), (2873, 7099), (2977, 6851), (3893, 5239)]