18916238

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{9661}}^1$

素因数の和:9763

約数の個数: 16

約数和(自身を含む): 31304880

約数和(自身を除く): 12388642

約数列:

[1, 2, 11, 22, 89, 178, 979, 1958, 9661, 19322, 106271, 212542, 859829, 1719658, 9458119, 18916238]

約数ペア:

[(1, 18916238), (2, 9458119), (11, 1719658), (22, 859829), (89, 212542), (178, 106271), (979, 19322), (1958, 9661)]