21228609

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^2$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 30853440

約数和(自身を除く): 9624831

約数列:

[1, 3, 23, 29, 69, 87, 103, 309, 667, 2001, 2369, 2987, 7107, 8961, 10609, 31827, 68701, 206103, 244007, 307661, 732021, 922983, 7076203, 21228609]

約数ペア:

[(1, 21228609), (3, 7076203), (23, 922983), (29, 732021), (69, 307661), (87, 244007), (103, 206103), (309, 68701), (667, 31827), (2001, 10609), (2369, 8961), (2987, 7107)]