19912763

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 23716800

約数和(自身を除く): 3804037

約数列:

[1, 13, 17, 29, 169, 221, 239, 377, 493, 2873, 3107, 4063, 4901, 6409, 6931, 40391, 52819, 83317, 90103, 117827, 686647, 1171339, 1531751, 19912763]

約数ペア:

[(1, 19912763), (13, 1531751), (17, 1171339), (29, 686647), (169, 117827), (221, 90103), (239, 83317), (377, 52819), (493, 40391), (2873, 6931), (3107, 6409), (4063, 4901)]