18312872

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{21001}}^1$

素因数の和:21116

約数の個数: 16

約数和(自身を含む): 34653300

約数和(自身を除く): 16340428

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 21001, 42002, 84004, 168008, 2289109, 4578218, 9156436, 18312872]

約数ペア:

[(1, 18312872), (2, 9156436), (4, 4578218), (8, 2289109), (109, 168008), (218, 84004), (436, 42002), (872, 21001)]