18917162

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{19997}}^1$

素因数の和:20053

約数の個数: 16

約数和(自身を含む): 31676832

約数和(自身を除く): 12759670

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 19997, 39994, 219967, 439934, 859871, 1719742, 9458581, 18917162]

約数ペア:

[(1, 18917162), (2, 9458581), (11, 1719742), (22, 859871), (43, 439934), (86, 219967), (473, 39994), (946, 19997)]