643806989

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{15937}}^1$

素因数の和:16172

約数の個数: 16

約数和(自身を含む): 765024000

約数和(自身を除く): 121217011

約数列:

[1, 7, 29, 199, 203, 1393, 5771, 15937, 40397, 111559, 462173, 3171463, 3235211, 22200241, 91972427, 643806989]

約数ペア:

[(1, 643806989), (7, 91972427), (29, 22200241), (199, 3235211), (203, 3171463), (1393, 462173), (5771, 111559), (15937, 40397)]