20120210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1811}}^1$

素因数の和:1930

約数の個数: 32

約数和(自身を含む): 39921984

約数和(自身を除く): 19801774

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 1811, 2222, 3622, 5555, 9055, 11110, 18110, 19921, 39842, 99605, 182911, 199210, 365822, 914555, 1829110, 2012021, 4024042, 10060105, 20120210]

約数ペア:

[(1, 20120210), (2, 10060105), (5, 4024042), (10, 2012021), (11, 1829110), (22, 914555), (55, 365822), (101, 199210), (110, 182911), (202, 99605), (505, 39842), (1010, 19921), (1111, 18110), (1811, 11110), (2222, 9055), (3622, 5555)]