389640391

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{172331}}^1$

素因数の和:172374

約数の個数: 16

約数和(自身を含む): 496316160

約数和(自身を除く): 106675769

約数列:

[1, 7, 17, 19, 119, 133, 323, 2261, 172331, 1206317, 2929627, 3274289, 20507389, 22920023, 55662913, 389640391]

約数ペア:

[(1, 389640391), (7, 55662913), (17, 22920023), (19, 20507389), (119, 3274289), (133, 2929627), (323, 1206317), (2261, 172331)]