21000688126

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{86779703}}^1$

素因数の和:86779727

約数の個数: 12

約数和(自身を含む): 34625101896

約数和(自身を除く): 13624413770

約数列:

[1, 2, 11, 22, 121, 242, 86779703, 173559406, 954576733, 1909153466, 10500344063, 21000688126]

約数ペア:

[(1, 21000688126), (2, 10500344063), (11, 1909153466), (22, 954576733), (121, 173559406), (242, 86779703)]