19905244

素因数分解:

$2^2\times {\mathrm{311}}^1\times {\mathrm{16001}}^1$

素因数の和:16316

約数の個数: 12

約数和(自身を含む): 34948368

約数和(自身を除く): 15043124

約数列:

[1, 2, 4, 311, 622, 1244, 16001, 32002, 64004, 4976311, 9952622, 19905244]

約数ペア:

[(1, 19905244), (2, 9952622), (4, 4976311), (311, 64004), (622, 32002), (1244, 16001)]