21100401

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7789}}^1$

素因数の和:7845

約数の個数: 24

約数和(自身を含む): 35647040

約数和(自身を除く): 14546639

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7789, 23367, 54523, 70101, 163569, 334927, 490707, 1004781, 2344489, 3014343, 7033467, 21100401]

約数ペア:

[(1, 21100401), (3, 7033467), (7, 3014343), (9, 2344489), (21, 1004781), (43, 490707), (63, 334927), (129, 163569), (301, 70101), (387, 54523), (903, 23367), (2709, 7789)]