18885889

素因数分解:

${\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:392

約数の個数: 16

約数和(自身を含む): 21150720

約数和(自身を除く): 2264831

約数列:

[1, 11, 89, 101, 191, 979, 1111, 2101, 8989, 16999, 19291, 98879, 186989, 212201, 1716899, 18885889]

約数ペア:

[(1, 18885889), (11, 1716899), (89, 212201), (101, 186989), (191, 98879), (979, 19291), (1111, 16999), (2101, 8989)]