21109517

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3433}}^1$

素因数の和:3500

約数の個数: 16

約数和(自身を含む): 25384128

約数和(自身を除く): 4274611

約数列:

[1, 11, 13, 43, 143, 473, 559, 3433, 6149, 37763, 44629, 147619, 490919, 1623809, 1919047, 21109517]

約数ペア:

[(1, 21109517), (11, 1919047), (13, 1623809), (43, 490919), (143, 147619), (473, 44629), (559, 37763), (3433, 6149)]