20155421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8291}}^1$

素因数の和:8332

約数の個数: 16

約数和(自身を含む): 25075008

約数和(自身を除く): 4919587

約数列:

[1, 11, 13, 17, 143, 187, 221, 2431, 8291, 91201, 107783, 140947, 1185613, 1550417, 1832311, 20155421]

約数ペア:

[(1, 20155421), (11, 1832311), (13, 1550417), (17, 1185613), (143, 140947), (187, 107783), (221, 91201), (2431, 8291)]