20985393

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{4447}}^1$

素因数の和:4485

約数の個数: 24

約数和(自身を含む): 33128704

約数和(自身を除く): 12143311

約数列:

[1, 3, 11, 13, 33, 39, 121, 143, 363, 429, 1573, 4447, 4719, 13341, 48917, 57811, 146751, 173433, 538087, 635921, 1614261, 1907763, 6995131, 20985393]

約数ペア:

[(1, 20985393), (3, 6995131), (11, 1907763), (13, 1614261), (33, 635921), (39, 538087), (121, 173433), (143, 146751), (363, 57811), (429, 48917), (1573, 13341), (4447, 4719)]