20642710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{187661}}^1$

素因数の和:187679

約数の個数: 16

約数和(自身を含む): 40534992

約数和(自身を除く): 19892282

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 187661, 375322, 938305, 1876610, 2064271, 4128542, 10321355, 20642710]

約数ペア:

[(1, 20642710), (2, 10321355), (5, 4128542), (10, 2064271), (11, 1876610), (22, 938305), (55, 375322), (110, 187661)]