128532257

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{311}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 163897344

約数和(自身を除く): 35365087

約数列:

[1, 7, 17, 23, 119, 151, 161, 311, 391, 1057, 2177, 2567, 2737, 3473, 5287, 7153, 17969, 24311, 37009, 46961, 50071, 59041, 121601, 328727, 413287, 798337, 851207, 1080103, 5588359, 7560721, 18361751, 128532257]

約数ペア:

[(1, 128532257), (7, 18361751), (17, 7560721), (23, 5588359), (119, 1080103), (151, 851207), (161, 798337), (311, 413287), (391, 328727), (1057, 121601), (2177, 59041), (2567, 50071), (2737, 46961), (3473, 37009), (5287, 24311), (7153, 17969)]