20387680

素因数分解:

$2^5\times 5^1\times {\mathrm{127423}}^1$

素因数の和:127438

約数の個数: 24

約数和(自身を含む): 48166272

約数和(自身を除く): 27778592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 127423, 254846, 509692, 637115, 1019384, 1274230, 2038768, 2548460, 4077536, 5096920, 10193840, 20387680]

約数ペア:

[(1, 20387680), (2, 10193840), (4, 5096920), (5, 4077536), (8, 2548460), (10, 2038768), (16, 1274230), (20, 1019384), (32, 637115), (40, 509692), (80, 254846), (160, 127423)]