20406768

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^1\times {\mathrm{9887}}^1$

素因数の和:9941

約数の個数: 40

約数和(自身を含む): 53948928

約数和(自身を除く): 33542160

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 86, 129, 172, 258, 344, 516, 688, 1032, 2064, 9887, 19774, 29661, 39548, 59322, 79096, 118644, 158192, 237288, 425141, 474576, 850282, 1275423, 1700564, 2550846, 3401128, 5101692, 6802256, 10203384, 20406768]

約数ペア:

[(1, 20406768), (2, 10203384), (3, 6802256), (4, 5101692), (6, 3401128), (8, 2550846), (12, 1700564), (16, 1275423), (24, 850282), (43, 474576), (48, 425141), (86, 237288), (129, 158192), (172, 118644), (258, 79096), (344, 59322), (516, 39548), (688, 29661), (1032, 19774), (2064, 9887)]