21075769

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7757}}^1$

素因数の和:7800

約数の個数: 16

約数和(自身を含む): 26066880

約数和(自身を除く): 4991111

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7757, 85327, 100841, 147383, 1109251, 1621213, 1915979, 21075769]

約数ペア:

[(1, 21075769), (11, 1915979), (13, 1621213), (19, 1109251), (143, 147383), (209, 100841), (247, 85327), (2717, 7757)]