20543501

素因数分解:

${\mathrm{11}}^2\times {\mathrm{41}}^2\times {\mathrm{101}}^1$

素因数の和:205

約数の個数: 18

約数和(自身を含む): 23374218

約数和(自身を除く): 2830717

約数列:

[1, 11, 41, 101, 121, 451, 1111, 1681, 4141, 4961, 12221, 18491, 45551, 169781, 203401, 501061, 1867591, 20543501]

約数ペア:

[(1, 20543501), (11, 1867591), (41, 501061), (101, 203401), (121, 169781), (451, 45551), (1111, 18491), (1681, 12221), (4141, 4961)]