21057509188

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{122427379}}^1$

素因数の和:122427426

約数の個数: 12

約数和(自身を含む): 37707633040

約数和(自身を除く): 16650123852

約数列:

[1, 2, 4, 43, 86, 172, 122427379, 244854758, 489709516, 5264377297, 10528754594, 21057509188]

約数ペア:

[(1, 21057509188), (2, 10528754594), (4, 5264377297), (43, 489709516), (86, 244854758), (172, 122427379)]