20641918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{12853}}^1$

素因数の和:12939

約数の個数: 16

約数和(自身を含む): 34243056

約数和(自身を除く): 13601138

約数列:

[1, 2, 11, 22, 73, 146, 803, 1606, 12853, 25706, 141383, 282766, 938269, 1876538, 10320959, 20641918]

約数ペア:

[(1, 20641918), (2, 10320959), (11, 1876538), (22, 938269), (73, 282766), (146, 141383), (803, 25706), (1606, 12853)]