128977261

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{16349}}^1$

素因数の和:16393

約数の個数: 16

約数和(自身を含む): 156960000

約数和(自身を除く): 27982739

約数列:

[1, 7, 23, 49, 161, 343, 1127, 7889, 16349, 114443, 376027, 801101, 2632189, 5607707, 18425323, 128977261]

約数ペア:

[(1, 128977261), (7, 18425323), (23, 5607707), (49, 2632189), (161, 801101), (343, 376027), (1127, 114443), (7889, 16349)]