21065187

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49103}}^1$

素因数の和:49130

約数の個数: 16

約数和(自身を含む): 32997888

約数和(自身を除く): 11932701

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49103, 147309, 540133, 638339, 1620399, 1915017, 7021729, 21065187]

約数ペア:

[(1, 21065187), (3, 7021729), (11, 1915017), (13, 1620399), (33, 638339), (39, 540133), (143, 147309), (429, 49103)]