20558385

素因数分解:

$3^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1117}}^1$

素因数の和:1537

約数の個数: 24

約数和(自身を含む): 35753640

約数和(自身を除く): 15195255

約数列:

[1, 3, 5, 9, 15, 45, 409, 1117, 1227, 2045, 3351, 3681, 5585, 6135, 10053, 16755, 18405, 50265, 456853, 1370559, 2284265, 4111677, 6852795, 20558385]

約数ペア:

[(1, 20558385), (3, 6852795), (5, 4111677), (9, 2284265), (15, 1370559), (45, 456853), (409, 50265), (1117, 18405), (1227, 16755), (2045, 10053), (3351, 6135), (3681, 5585)]