21105667

素因数分解:

${\mathrm{11}}^3\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 16

約数和(自身を含む): 23593824

約数和(自身を除く): 2488157

約数列:

[1, 11, 101, 121, 157, 1111, 1331, 1727, 12221, 15857, 18997, 134431, 174427, 208967, 1918697, 21105667]

約数ペア:

[(1, 21105667), (11, 1918697), (101, 208967), (121, 174427), (157, 134431), (1111, 18997), (1331, 15857), (1727, 12221)]