21399453

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5441}}^1$

素因数の和:5489

約数の個数: 24

約数和(自身を含む): 33958080

約数和(自身を除く): 12558627

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 5441, 16323, 48969, 103379, 125143, 310137, 375429, 930411, 1126287, 2377717, 7133151, 21399453]

約数ペア:

[(1, 21399453), (3, 7133151), (9, 2377717), (19, 1126287), (23, 930411), (57, 375429), (69, 310137), (171, 125143), (207, 103379), (437, 48969), (1311, 16323), (3933, 5441)]