20854431

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13711}}^1$

素因数の和:13743

約数の個数: 18

約数和(自身を含む): 32620848

約数和(自身を除く): 11766417

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13711, 41133, 123399, 178243, 534729, 1604187, 2317159, 6951477, 20854431]

約数ペア:

[(1, 20854431), (3, 6951477), (9, 2317159), (13, 1604187), (39, 534729), (117, 178243), (169, 123399), (507, 41133), (1521, 13711)]