20388767

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3739}}^1$

素因数の和:3806

約数の個数: 16

約数和(自身を含む): 25132800

約数和(自身を除く): 4744033

約数列:

[1, 7, 19, 41, 133, 287, 779, 3739, 5453, 26173, 71041, 153299, 497287, 1073093, 2912681, 20388767]

約数ペア:

[(1, 20388767), (7, 2912681), (19, 1073093), (41, 497287), (133, 153299), (287, 71041), (779, 26173), (3739, 5453)]