21806031

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{13003}}^1$

素因数の和:13062

約数の個数: 16

約数和(自身を含む): 32041856

約数和(自身を除く): 10235825

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 13003, 39009, 169039, 507117, 559129, 1677387, 7268677, 21806031]

約数ペア:

[(1, 21806031), (3, 7268677), (13, 1677387), (39, 559129), (43, 507117), (129, 169039), (559, 39009), (1677, 13003)]