128663997

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{556987}}^1$

素因数の和:557008

約数の個数: 16

約数和(自身を含む): 213883392

約数和(自身を除く): 85219395

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 556987, 1670961, 3898909, 6126857, 11696727, 18380571, 42887999, 128663997]

約数ペア:

[(1, 128663997), (3, 42887999), (7, 18380571), (11, 11696727), (21, 6126857), (33, 3898909), (77, 1670961), (231, 556987)]