19520380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88729}}^1$

素因数の和:88749

約数の個数: 24

約数和(自身を含む): 44719920

約数和(自身を除く): 25199540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88729, 177458, 354916, 443645, 887290, 976019, 1774580, 1952038, 3904076, 4880095, 9760190, 19520380]

約数ペア:

[(1, 19520380), (2, 9760190), (4, 4880095), (5, 3904076), (10, 1952038), (11, 1774580), (20, 976019), (22, 887290), (44, 443645), (55, 354916), (110, 177458), (220, 88729)]