25781456

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{39301}}^1$

素因数の和:39350

約数の個数: 20

約数和(自身を含む): 51171204

約数和(自身を除く): 25389748

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 39301, 78602, 157204, 314408, 628816, 1611341, 3222682, 6445364, 12890728, 25781456]

約数ペア:

[(1, 25781456), (2, 12890728), (4, 6445364), (8, 3222682), (16, 1611341), (41, 628816), (82, 314408), (164, 157204), (328, 78602), (656, 39301)]