21133568

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2663}}^1$

素因数の和:2710

約数の個数: 36

約数和(自身を含む): 43561728

約数和(自身を除く): 22428160

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2663, 3968, 5326, 7936, 10652, 21304, 42608, 82553, 85216, 165106, 170432, 330212, 340864, 660424, 681728, 1320848, 2641696, 5283392, 10566784, 21133568]

約数ペア:

[(1, 21133568), (2, 10566784), (4, 5283392), (8, 2641696), (16, 1320848), (31, 681728), (32, 660424), (62, 340864), (64, 330212), (124, 170432), (128, 165106), (248, 85216), (256, 82553), (496, 42608), (992, 21304), (1984, 10652), (2663, 7936), (3968, 5326)]