21000978874

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1\times {\mathrm{1293323}}^1$

素因数の和:1293701

約数の個数: 16

約数和(自身を含む): 32964242112

約数和(自身を除く): 11963263238

約数列:

[1, 2, 23, 46, 353, 706, 8119, 16238, 1293323, 2586646, 29746429, 59492858, 456543019, 913086038, 10500489437, 21000978874]

約数ペア:

[(1, 21000978874), (2, 10500489437), (23, 913086038), (46, 456543019), (353, 59492858), (706, 29746429), (8119, 2586646), (16238, 1293323)]