20725456

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9319}}^1$

素因数の和:9466

約数の個数: 20

約数和(自身を含む): 40448800

約数和(自身を除く): 19723344

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9319, 18638, 37276, 74552, 149104, 1295341, 2590682, 5181364, 10362728, 20725456]

約数ペア:

[(1, 20725456), (2, 10362728), (4, 5181364), (8, 2590682), (16, 1295341), (139, 149104), (278, 74552), (556, 37276), (1112, 18638), (2224, 9319)]