21717189

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{443}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 33939360

約数和(自身を除く): 12222171

約数列:

[1, 3, 9, 13, 39, 117, 419, 443, 1257, 1329, 3771, 3987, 5447, 5759, 16341, 17277, 49023, 51831, 185617, 556851, 1670553, 2413021, 7239063, 21717189]

約数ペア:

[(1, 21717189), (3, 7239063), (9, 2413021), (13, 1670553), (39, 556851), (117, 185617), (419, 51831), (443, 49023), (1257, 17277), (1329, 16341), (3771, 5759), (3987, 5447)]