12690005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 16682400

約数和(自身を除く): 3992395

約数列:

[1, 5, 19, 31, 95, 139, 155, 589, 695, 961, 2641, 2945, 4309, 4805, 13205, 18259, 21545, 81871, 91295, 133579, 409355, 667895, 2538001, 12690005]

約数ペア:

[(1, 12690005), (5, 2538001), (19, 667895), (31, 409355), (95, 133579), (139, 91295), (155, 81871), (589, 21545), (695, 18259), (961, 13205), (2641, 4805), (2945, 4309)]