20181895

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1949}}^1$

素因数の和:2082

約数の個数: 16

約数和(自身を含む): 25740000

約数和(自身を除く): 5558105

約数列:

[1, 5, 19, 95, 109, 545, 1949, 2071, 9745, 10355, 37031, 185155, 212441, 1062205, 4036379, 20181895]

約数ペア:

[(1, 20181895), (5, 4036379), (19, 1062205), (95, 212441), (109, 185155), (545, 37031), (1949, 10355), (2071, 9745)]