209780978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{63149}}^1$

素因数の和:63313

約数の個数: 16

約数和(自身を含む): 345556800

約数和(自身を除く): 135775822

約数列:

[1, 2, 11, 22, 151, 302, 1661, 3322, 63149, 126298, 694639, 1389278, 9535499, 19070998, 104890489, 209780978]

約数ペア:

[(1, 209780978), (2, 104890489), (11, 19070998), (22, 9535499), (151, 1389278), (302, 694639), (1661, 126298), (3322, 63149)]