19306781

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{439}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 22176000

約数和(自身を除く): 2869219

約数列:

[1, 13, 17, 199, 221, 439, 2587, 3383, 5707, 7463, 43979, 87361, 97019, 1135693, 1485137, 19306781]

約数ペア:

[(1, 19306781), (13, 1485137), (17, 1135693), (199, 97019), (221, 87361), (439, 43979), (2587, 7463), (3383, 5707)]