19506520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1031}}^1$

素因数の和:1096

約数の個数: 64

約数和(自身を含む): 49040640

約数和(自身を除く): 29534120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1031, 1720, 1892, 2062, 2365, 3784, 4124, 4730, 5155, 8248, 9460, 10310, 11341, 18920, 20620, 22682, 41240, 44333, 45364, 56705, 88666, 90728, 113410, 177332, 221665, 226820, 354664, 443330, 453640, 487663, 886660, 975326, 1773320, 1950652, 2438315, 3901304, 4876630, 9753260, 19506520]

約数ペア:

[(1, 19506520), (2, 9753260), (4, 4876630), (5, 3901304), (8, 2438315), (10, 1950652), (11, 1773320), (20, 975326), (22, 886660), (40, 487663), (43, 453640), (44, 443330), (55, 354664), (86, 226820), (88, 221665), (110, 177332), (172, 113410), (215, 90728), (220, 88666), (344, 56705), (430, 45364), (440, 44333), (473, 41240), (860, 22682), (946, 20620), (1031, 18920), (1720, 11341), (1892, 10310), (2062, 9460), (2365, 8248), (3784, 5155), (4124, 4730)]