19948291

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2131}}^1$

素因数の和:2202

約数の個数: 16

約数和(自身を含む): 23332608

約数和(自身を除く): 3384317

約数列:

[1, 11, 23, 37, 253, 407, 851, 2131, 9361, 23441, 49013, 78847, 539143, 867317, 1813481, 19948291]

約数ペア:

[(1, 19948291), (11, 1813481), (23, 867317), (37, 539143), (253, 78847), (407, 49013), (851, 23441), (2131, 9361)]