19386740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8893}}^1$

素因数の和:9011

約数の個数: 24

約数和(自身を含む): 41090280

約数和(自身を除く): 21703540

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8893, 17786, 35572, 44465, 88930, 177860, 969337, 1938674, 3877348, 4846685, 9693370, 19386740]

約数ペア:

[(1, 19386740), (2, 9693370), (4, 4846685), (5, 3877348), (10, 1938674), (20, 969337), (109, 177860), (218, 88930), (436, 44465), (545, 35572), (1090, 17786), (2180, 8893)]