21790379

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2293}}^1$

素因数の和:2366

約数の個数: 16

約数和(自身を含む): 25435872

約数和(自身を除く): 3645493

約数列:

[1, 13, 17, 43, 221, 559, 731, 2293, 9503, 29809, 38981, 98599, 506753, 1281787, 1676183, 21790379]

約数ペア:

[(1, 21790379), (13, 1676183), (17, 1281787), (43, 506753), (221, 98599), (559, 38981), (731, 29809), (2293, 9503)]