128971689

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{558319}}^1$

素因数の和:558340

約数の個数: 16

約数和(自身を含む): 214394880

約数和(自身を除く): 85423191

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 558319, 1674957, 3908233, 6141509, 11724699, 18424527, 42990563, 128971689]

約数ペア:

[(1, 128971689), (3, 42990563), (7, 18424527), (11, 11724699), (21, 6141509), (33, 3908233), (77, 1674957), (231, 558319)]