20915716

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{439}}^1$

素因数の和:763

約数の個数: 24

約数和(自身を含む): 37674560

約数和(自身を除く): 16758844

約数列:

[1, 2, 4, 43, 86, 172, 277, 439, 554, 878, 1108, 1756, 11911, 18877, 23822, 37754, 47644, 75508, 121603, 243206, 486412, 5228929, 10457858, 20915716]

約数ペア:

[(1, 20915716), (2, 10457858), (4, 5228929), (43, 486412), (86, 243206), (172, 121603), (277, 75508), (439, 47644), (554, 37754), (878, 23822), (1108, 18877), (1756, 11911)]