21310731

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{14011}}^1$

素因数の和:14043

約数の個数: 18

約数和(自身を含む): 33334548

約数和(自身を除く): 12023817

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 14011, 42033, 126099, 182143, 546429, 1639287, 2367859, 7103577, 21310731]

約数ペア:

[(1, 21310731), (3, 7103577), (9, 2367859), (13, 1639287), (39, 546429), (117, 182143), (169, 126099), (507, 42033), (1521, 14011)]