18657991

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2543}}^1$

素因数の和:2606

約数の個数: 16

約数和(自身を含む): 21980160

約数和(自身を除く): 3322169

約数列:

[1, 11, 23, 29, 253, 319, 667, 2543, 7337, 27973, 58489, 73747, 643379, 811217, 1696181, 18657991]

約数ペア:

[(1, 18657991), (11, 1696181), (23, 811217), (29, 643379), (253, 73747), (319, 58489), (667, 27973), (2543, 7337)]