20490899

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8429}}^1$

素因数の和:8470

約数の個数: 16

約数和(自身を含む): 25492320

約数和(自身を除く): 5001421

約数列:

[1, 11, 13, 17, 143, 187, 221, 2431, 8429, 92719, 109577, 143293, 1205347, 1576223, 1862809, 20490899]

約数ペア:

[(1, 20490899), (11, 1862809), (13, 1576223), (17, 1205347), (143, 143293), (187, 109577), (221, 92719), (2431, 8429)]