21491602

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4909}}^1$

素因数の和:5121

約数の個数: 16

約数和(自身を含む): 35352000

約数和(自身を除く): 13860398

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 4909, 9818, 53999, 107998, 976891, 1953782, 10745801, 21491602]

約数ペア:

[(1, 21491602), (2, 10745801), (11, 1953782), (22, 976891), (199, 107998), (398, 53999), (2189, 9818), (4378, 4909)]