21780453611

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{1637}}^1\times {\mathrm{44203}}^1$

素因数の和:45890

約数の個数: 16

約数和(自身を含む): 25486965504

約数和(自身を除く): 3706511893

約数列:

[1, 7, 43, 301, 1637, 11459, 44203, 70391, 309421, 492737, 1900729, 13305103, 72360311, 506522177, 3111493373, 21780453611]

約数ペア:

[(1, 21780453611), (7, 3111493373), (43, 506522177), (301, 72360311), (1637, 13305103), (11459, 1900729), (44203, 492737), (70391, 309421)]