21064292

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{309769}}^1$

素因数の和:309790

約数の個数: 12

約数和(自身を含む): 39031020

約数和(自身を除く): 17966728

約数列:

[1, 2, 4, 17, 34, 68, 309769, 619538, 1239076, 5266073, 10532146, 21064292]

約数ペア:

[(1, 21064292), (2, 10532146), (4, 5266073), (17, 1239076), (34, 619538), (68, 309769)]