18328513

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 21565440

約数和(自身を除く): 3236927

約数列:

[1, 7, 53, 127, 371, 389, 889, 2723, 6731, 20617, 47117, 49403, 144319, 345821, 2618359, 18328513]

約数ペア:

[(1, 18328513), (7, 2618359), (53, 345821), (127, 144319), (371, 49403), (389, 47117), (889, 20617), (2723, 6731)]