19854992

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28859}}^1$

素因数の和:28910

約数の個数: 20

約数和(自身を含む): 39365040

約数和(自身を除く): 19510048

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28859, 57718, 115436, 230872, 461744, 1240937, 2481874, 4963748, 9927496, 19854992]

約数ペア:

[(1, 19854992), (2, 9927496), (4, 4963748), (8, 2481874), (16, 1240937), (43, 461744), (86, 230872), (172, 115436), (344, 57718), (688, 28859)]