20123571490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{691}}^1\times {\mathrm{264749}}^1$

素因数の和:265458

約数の個数: 32

約数和(自身を含む): 39572712000

約数和(自身を除く): 19449140510

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 691, 1382, 3455, 6910, 7601, 15202, 38005, 76010, 264749, 529498, 1323745, 2647490, 2912239, 5824478, 14561195, 29122390, 182941559, 365883118, 914707795, 1829415590, 2012357149, 4024714298, 10061785745, 20123571490]

約数ペア:

[(1, 20123571490), (2, 10061785745), (5, 4024714298), (10, 2012357149), (11, 1829415590), (22, 914707795), (55, 365883118), (110, 182941559), (691, 29122390), (1382, 14561195), (3455, 5824478), (6910, 2912239), (7601, 2647490), (15202, 1323745), (38005, 529498), (76010, 264749)]