128589769

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{3911}}^1$

素因数の和:3997

約数の個数: 24

約数和(自身を含む): 165900096

約数和(自身を除く): 37310327

約数列:

[1, 7, 11, 49, 61, 77, 427, 539, 671, 2989, 3911, 4697, 27377, 32879, 43021, 191639, 238571, 301147, 1669997, 2108029, 2624281, 11689979, 18369967, 128589769]

約数ペア:

[(1, 128589769), (7, 18369967), (11, 11689979), (49, 2624281), (61, 2108029), (77, 1669997), (427, 301147), (539, 238571), (671, 191639), (2989, 43021), (3911, 32879), (4697, 27377)]