21668528

素因数分解:

$2^4\times 7^1\times {\mathrm{193469}}^1$

素因数の和:193484

約数の個数: 20

約数和(自身を含む): 47980560

約数和(自身を除く): 26312032

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193469, 386938, 773876, 1354283, 1547752, 2708566, 3095504, 5417132, 10834264, 21668528]

約数ペア:

[(1, 21668528), (2, 10834264), (4, 5417132), (7, 3095504), (8, 2708566), (14, 1547752), (16, 1354283), (28, 773876), (56, 386938), (112, 193469)]