21279411

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1163}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 32685120

約数和(自身を除く): 11405709

約数列:

[1, 3, 9, 19, 57, 107, 171, 321, 963, 1163, 2033, 3489, 6099, 10467, 18297, 22097, 66291, 124441, 198873, 373323, 1119969, 2364379, 7093137, 21279411]

約数ペア:

[(1, 21279411), (3, 7093137), (9, 2364379), (19, 1119969), (57, 373323), (107, 198873), (171, 124441), (321, 66291), (963, 22097), (1163, 18297), (2033, 10467), (3489, 6099)]