20906416

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3359}}^1$

素因数の和:3756

約数の個数: 20

約数和(自身を含む): 40622400

約数和(自身を除く): 19715984

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3359, 6224, 6718, 13436, 26872, 53744, 1306651, 2613302, 5226604, 10453208, 20906416]

約数ペア:

[(1, 20906416), (2, 10453208), (4, 5226604), (8, 2613302), (16, 1306651), (389, 53744), (778, 26872), (1556, 13436), (3112, 6718), (3359, 6224)]