128525541

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 183997440

約数和(自身を除く): 55471899

約数列:

[1, 3, 23, 59, 69, 131, 177, 241, 393, 723, 1357, 3013, 4071, 5543, 7729, 9039, 14219, 16629, 23187, 31571, 42657, 94713, 177767, 327037, 533301, 726133, 981111, 1862689, 2178399, 5588067, 42841847, 128525541]

約数ペア:

[(1, 128525541), (3, 42841847), (23, 5588067), (59, 2178399), (69, 1862689), (131, 981111), (177, 726133), (241, 533301), (393, 327037), (723, 177767), (1357, 94713), (3013, 42657), (4071, 31571), (5543, 23187), (7729, 16629), (9039, 14219)]