21460784

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31193}}^1$

素因数の和:31244

約数の個数: 20

約数和(自身を含む): 42548616

約数和(自身を除く): 21087832

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31193, 62386, 124772, 249544, 499088, 1341299, 2682598, 5365196, 10730392, 21460784]

約数ペア:

[(1, 21460784), (2, 10730392), (4, 5365196), (8, 2682598), (16, 1341299), (43, 499088), (86, 249544), (172, 124772), (344, 62386), (688, 31193)]