20549188

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42457}}^1$

素因数の和:42483

約数の個数: 18

約数和(自身を含む): 39528398

約数和(自身を除く): 18979210

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42457, 84914, 169828, 467027, 934054, 1868108, 5137297, 10274594, 20549188]

約数ペア:

[(1, 20549188), (2, 10274594), (4, 5137297), (11, 1868108), (22, 934054), (44, 467027), (121, 169828), (242, 84914), (484, 42457)]