21040456

素因数分解:

$2^3\times {\mathrm{911}}^1\times {\mathrm{2887}}^1$

素因数の和:3804

約数の個数: 16

約数和(自身を含む): 39507840

約数和(自身を除く): 18467384

約数列:

[1, 2, 4, 8, 911, 1822, 2887, 3644, 5774, 7288, 11548, 23096, 2630057, 5260114, 10520228, 21040456]

約数ペア:

[(1, 21040456), (2, 10520228), (4, 5260114), (8, 2630057), (911, 23096), (1822, 11548), (2887, 7288), (3644, 5774)]