19720347

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 28163520

約数和(自身を除く): 8443173

約数列:

[1, 3, 19, 57, 131, 139, 361, 393, 417, 1083, 2489, 2641, 7467, 7923, 18209, 47291, 50179, 54627, 141873, 150537, 345971, 1037913, 6573449, 19720347]

約数ペア:

[(1, 19720347), (3, 6573449), (19, 1037913), (57, 345971), (131, 150537), (139, 141873), (361, 54627), (393, 50179), (417, 47291), (1083, 18209), (2489, 7923), (2641, 7467)]