81028856

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{2161}}^1$

素因数の和:2319

約数の個数: 32

約数和(自身を含む): 156961200

約数和(自身を除く): 75932344

約数列:

[1, 2, 4, 8, 43, 86, 109, 172, 218, 344, 436, 872, 2161, 4322, 4687, 8644, 9374, 17288, 18748, 37496, 92923, 185846, 235549, 371692, 471098, 743384, 942196, 1884392, 10128607, 20257214, 40514428, 81028856]

約数ペア:

[(1, 81028856), (2, 40514428), (4, 20257214), (8, 10128607), (43, 1884392), (86, 942196), (109, 743384), (172, 471098), (218, 371692), (344, 235549), (436, 185846), (872, 92923), (2161, 37496), (4322, 18748), (4687, 17288), (8644, 9374)]