21010660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2221}}^1$

素因数の和:2284

約数の個数: 48

約数和(自身を含む): 49275072

約数和(自身を除く): 28264412

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2221, 2365, 4442, 4730, 8884, 9460, 11105, 22210, 24431, 44420, 48862, 95503, 97724, 122155, 191006, 244310, 382012, 477515, 488620, 955030, 1050533, 1910060, 2101066, 4202132, 5252665, 10505330, 21010660]

約数ペア:

[(1, 21010660), (2, 10505330), (4, 5252665), (5, 4202132), (10, 2101066), (11, 1910060), (20, 1050533), (22, 955030), (43, 488620), (44, 477515), (55, 382012), (86, 244310), (110, 191006), (172, 122155), (215, 97724), (220, 95503), (430, 48862), (473, 44420), (860, 24431), (946, 22210), (1892, 11105), (2221, 9460), (2365, 8884), (4442, 4730)]