20256784

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29443}}^1$

素因数の和:29494

約数の個数: 20

約数和(自身を含む): 40161616

約数和(自身を除く): 19904832

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29443, 58886, 117772, 235544, 471088, 1266049, 2532098, 5064196, 10128392, 20256784]

約数ペア:

[(1, 20256784), (2, 10128392), (4, 5064196), (8, 2532098), (16, 1266049), (43, 471088), (86, 235544), (172, 117772), (344, 58886), (688, 29443)]