21841391

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 26703360

約数和(自身を除く): 4861969

約数列:

[1, 11, 13, 31, 143, 169, 341, 379, 403, 1859, 4169, 4433, 4927, 5239, 11749, 54197, 57629, 64051, 129239, 152737, 704561, 1680107, 1985581, 21841391]

約数ペア:

[(1, 21841391), (11, 1985581), (13, 1680107), (31, 704561), (143, 152737), (169, 129239), (341, 64051), (379, 57629), (403, 54197), (1859, 11749), (4169, 5239), (4433, 4927)]