81404728

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{4561}}^1$

素因数の和:4687

約数の個数: 32

約数和(自身を含む): 160947360

約数和(自身を除く): 79542632

約数列:

[1, 2, 4, 8, 23, 46, 92, 97, 184, 194, 388, 776, 2231, 4462, 4561, 8924, 9122, 17848, 18244, 36488, 104903, 209806, 419612, 442417, 839224, 884834, 1769668, 3539336, 10175591, 20351182, 40702364, 81404728]

約数ペア:

[(1, 81404728), (2, 40702364), (4, 20351182), (8, 10175591), (23, 3539336), (46, 1769668), (92, 884834), (97, 839224), (184, 442417), (194, 419612), (388, 209806), (776, 104903), (2231, 36488), (4462, 18244), (4561, 17848), (8924, 9122)]