21068957

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5647}}^1$

素因数の和:5708

約数の個数: 16

約数和(自身を含む): 26568192

約数和(自身を除く): 5499235

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5647, 39529, 73411, 231527, 513877, 1620689, 3009851, 21068957]

約数ペア:

[(1, 21068957), (7, 3009851), (13, 1620689), (41, 513877), (91, 231527), (287, 73411), (533, 39529), (3731, 5647)]