2018328040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{256133}}^1$

素因数の和:256341

約数の個数: 32

約数和(自身を含む): 4564307880

約数和(自身を除く): 2545979840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 256133, 512266, 1024532, 1280665, 2049064, 2561330, 5122660, 10245320, 50458201, 100916402, 201832804, 252291005, 403665608, 504582010, 1009164020, 2018328040]

約数ペア:

[(1, 2018328040), (2, 1009164020), (4, 504582010), (5, 403665608), (8, 252291005), (10, 201832804), (20, 100916402), (40, 50458201), (197, 10245320), (394, 5122660), (788, 2561330), (985, 2049064), (1576, 1280665), (1970, 1024532), (3940, 512266), (7880, 256133)]