21347887

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4441}}^1$

素因数の和:4494

約数の個数: 16

約数和(自身を含む): 25585920

約数和(自身を除く): 4238033

約数列:

[1, 11, 19, 23, 209, 253, 437, 4441, 4807, 48851, 84379, 102143, 928169, 1123573, 1940717, 21347887]

約数ペア:

[(1, 21347887), (11, 1940717), (19, 1123573), (23, 928169), (209, 102143), (253, 84379), (437, 48851), (4441, 4807)]