2212001

素因数分解:

${\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:304

約数の個数: 12

約数和(自身を含む): 2469012

約数和(自身を除く): 257011

約数列:

[1, 11, 101, 121, 181, 1111, 1991, 12221, 18281, 21901, 201091, 2212001]

約数ペア:

[(1, 2212001), (11, 201091), (101, 21901), (121, 18281), (181, 12221), (1111, 1991)]