128210900

素因数分解:

$2^2\times 5^2\times {\mathrm{1282109}}^1$

素因数の和:1282123

約数の個数: 18

約数和(自身を含む): 278217870

約数和(自身を除く): 150006970

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1282109, 2564218, 5128436, 6410545, 12821090, 25642180, 32052725, 64105450, 128210900]

約数ペア:

[(1, 128210900), (2, 64105450), (4, 32052725), (5, 25642180), (10, 12821090), (20, 6410545), (25, 5128436), (50, 2564218), (100, 1282109)]