20684708

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42737}}^1$

素因数の和:42763

約数の個数: 18

約数和(自身を含む): 39789078

約数和(自身を除く): 19104370

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42737, 85474, 170948, 470107, 940214, 1880428, 5171177, 10342354, 20684708]

約数ペア:

[(1, 20684708), (2, 10342354), (4, 5171177), (11, 1880428), (22, 940214), (44, 470107), (121, 170948), (242, 85474), (484, 42737)]