219624820

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{26849}}^1$

素因数の和:27267

約数の個数: 24

約数和(自身を含む): 462357000

約数和(自身を除く): 242732180

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 26849, 53698, 107396, 134245, 268490, 536980, 10981241, 21962482, 43924964, 54906205, 109812410, 219624820]

約数ペア:

[(1, 219624820), (2, 109812410), (4, 54906205), (5, 43924964), (10, 21962482), (20, 10981241), (409, 536980), (818, 268490), (1636, 134245), (2045, 107396), (4090, 53698), (8180, 26849)]