257611561921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{4127}}^1\times {\mathrm{469331}}^1$

素因数の和:473484

約数の個数: 16

約数和(自身を含む): 309984399360

約数和(自身を除く): 52372837439

約数列:

[1, 7, 19, 133, 4127, 28889, 78413, 469331, 548891, 3285317, 8917289, 62421023, 1936929037, 13558503259, 36801651703, 257611561921]

約数ペア:

[(1, 257611561921), (7, 36801651703), (19, 13558503259), (133, 1936929037), (4127, 62421023), (28889, 8917289), (78413, 3285317), (469331, 548891)]