17981181

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{479}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 26906880

約数和(自身を除く): 8925699

約数列:

[1, 3, 9, 43, 97, 129, 291, 387, 479, 873, 1437, 4171, 4311, 12513, 20597, 37539, 46463, 61791, 139389, 185373, 418167, 1997909, 5993727, 17981181]

約数ペア:

[(1, 17981181), (3, 5993727), (9, 1997909), (43, 418167), (97, 185373), (129, 139389), (291, 61791), (387, 46463), (479, 37539), (873, 20597), (1437, 12513), (4171, 4311)]