257101857

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{77417}}^1$

素因数の和:77470

約数の個数: 20

約数和(自身を含む): 393438276

約数和(自身を除く): 136336419

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 77417, 232251, 696753, 2090259, 3174097, 6270777, 9522291, 28566873, 85700619, 257101857]

約数ペア:

[(1, 257101857), (3, 85700619), (9, 28566873), (27, 9522291), (41, 6270777), (81, 3174097), (123, 2090259), (369, 696753), (1107, 232251), (3321, 77417)]