81640899

素因数分解:

$3^3\times {\mathrm{409}}^1\times {\mathrm{7393}}^1$

素因数の和:7811

約数の個数: 16

約数和(自身を含む): 121261600

約数和(自身を除く): 39620701

約数列:

[1, 3, 9, 27, 409, 1227, 3681, 7393, 11043, 22179, 66537, 199611, 3023737, 9071211, 27213633, 81640899]

約数ペア:

[(1, 81640899), (3, 27213633), (9, 9071211), (27, 3023737), (409, 199611), (1227, 66537), (3681, 22179), (7393, 11043)]