20679449

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1\times {\mathrm{409}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 24560640

約数和(自身を除く): 3881191

約数列:

[1, 7, 31, 217, 233, 409, 1631, 2863, 7223, 12679, 50561, 88753, 95297, 667079, 2954207, 20679449]

約数ペア:

[(1, 20679449), (7, 2954207), (31, 667079), (217, 95297), (233, 88753), (409, 50561), (1631, 12679), (2863, 7223)]