21220511

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1621}}^1$

素因数の和:1706

約数の個数: 16

約数和(自身を含む): 24524640

約数和(自身を除く): 3304129

約数列:

[1, 13, 19, 53, 247, 689, 1007, 1621, 13091, 21073, 30799, 85913, 400387, 1116869, 1632347, 21220511]

約数ペア:

[(1, 21220511), (13, 1632347), (19, 1116869), (53, 400387), (247, 85913), (689, 30799), (1007, 21073), (1621, 13091)]