20218256

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29387}}^1$

素因数の和:29438

約数の個数: 20

約数和(自身を含む): 40085232

約数和(自身を除く): 19866976

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29387, 58774, 117548, 235096, 470192, 1263641, 2527282, 5054564, 10109128, 20218256]

約数ペア:

[(1, 20218256), (2, 10109128), (4, 5054564), (8, 2527282), (16, 1263641), (43, 470192), (86, 235096), (172, 117548), (344, 58774), (688, 29387)]