21255091

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7823}}^1$

素因数の和:7866

約数の個数: 16

約数和(自身を含む): 26288640

約数和(自身を除く): 5033549

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7823, 86053, 101699, 148637, 1118689, 1635007, 1932281, 21255091]

約数ペア:

[(1, 21255091), (11, 1932281), (13, 1635007), (19, 1118689), (143, 148637), (209, 101699), (247, 86053), (2717, 7823)]