21680624

素因数分解:

$2^4\times 7^1\times {\mathrm{193577}}^1$

素因数の和:193592

約数の個数: 20

約数和(自身を含む): 48007344

約数和(自身を除く): 26326720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193577, 387154, 774308, 1355039, 1548616, 2710078, 3097232, 5420156, 10840312, 21680624]

約数ペア:

[(1, 21680624), (2, 10840312), (4, 5420156), (7, 3097232), (8, 2710078), (14, 1548616), (16, 1355039), (28, 774308), (56, 387154), (112, 193577)]