21269919

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{4637}}^1$

素因数の和:4790

約数の個数: 16

約数和(自身を含む): 31167360

約数和(自身を除く): 9897441

約数列:

[1, 3, 11, 33, 139, 417, 1529, 4587, 4637, 13911, 51007, 153021, 644543, 1933629, 7089973, 21269919]

約数ペア:

[(1, 21269919), (3, 7089973), (11, 1933629), (33, 644543), (139, 153021), (417, 51007), (1529, 13911), (4587, 4637)]