161780571

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{14369}}^1$

素因数の和:14520

約数の個数: 20

約数和(自身を含む): 243427800

約数和(自身を除く): 81647229

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 3753, 11259, 14369, 43107, 129321, 387963, 1163889, 1997291, 5991873, 17975619, 53926857, 161780571]

約数ペア:

[(1, 161780571), (3, 53926857), (9, 17975619), (27, 5991873), (81, 1997291), (139, 1163889), (417, 387963), (1251, 129321), (3753, 43107), (11259, 14369)]