20100987260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{497303}}^1$

素因数の和:497402

約数の個数: 48

約数和(自身を含む): 44112854016

約数和(自身を除く): 24011866756

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 2021, 4042, 8084, 10105, 20210, 40420, 497303, 994606, 1989212, 2486515, 4973030, 9946060, 21384029, 23373241, 42768058, 46746482, 85536116, 93492964, 106920145, 116866205, 213840290, 233732410, 427680580, 467464820, 1005049363, 2010098726, 4020197452, 5025246815, 10050493630, 20100987260]

約数ペア:

[(1, 20100987260), (2, 10050493630), (4, 5025246815), (5, 4020197452), (10, 2010098726), (20, 1005049363), (43, 467464820), (47, 427680580), (86, 233732410), (94, 213840290), (172, 116866205), (188, 106920145), (215, 93492964), (235, 85536116), (430, 46746482), (470, 42768058), (860, 23373241), (940, 21384029), (2021, 9946060), (4042, 4973030), (8084, 2486515), (10105, 1989212), (20210, 994606), (40420, 497303)]