20876401

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{2521}}^1$

素因数の和:2561

約数の個数: 18

約数和(自身を含む): 26306982

約数和(自身を除く): 5430581

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 2521, 8281, 17647, 32773, 123529, 229411, 426049, 1605877, 2982343, 20876401]

約数ペア:

[(1, 20876401), (7, 2982343), (13, 1605877), (49, 426049), (91, 229411), (169, 123529), (637, 32773), (1183, 17647), (2521, 8281)]