20772784

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{277}}^1$

素因数の和:437

約数の個数: 40

約数和(自身を含む): 41711120

約数和(自身を除く): 20938336

約数列:

[1, 2, 4, 8, 16, 43, 86, 109, 172, 218, 277, 344, 436, 554, 688, 872, 1108, 1744, 2216, 4432, 4687, 9374, 11911, 18748, 23822, 30193, 37496, 47644, 60386, 74992, 95288, 120772, 190576, 241544, 483088, 1298299, 2596598, 5193196, 10386392, 20772784]

約数ペア:

[(1, 20772784), (2, 10386392), (4, 5193196), (8, 2596598), (16, 1298299), (43, 483088), (86, 241544), (109, 190576), (172, 120772), (218, 95288), (277, 74992), (344, 60386), (436, 47644), (554, 37496), (688, 30193), (872, 23822), (1108, 18748), (1744, 11911), (2216, 9374), (4432, 4687)]