12821800

素因数分解:

$2^3\times 5^2\times {\mathrm{64109}}^1$

素因数の和:64125

約数の個数: 24

約数和(自身を含む): 29811150

約数和(自身を除く): 16989350

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 64109, 128218, 256436, 320545, 512872, 641090, 1282180, 1602725, 2564360, 3205450, 6410900, 12821800]

約数ペア:

[(1, 12821800), (2, 6410900), (4, 3205450), (5, 2564360), (8, 1602725), (10, 1282180), (20, 641090), (25, 512872), (40, 320545), (50, 256436), (100, 128218), (200, 64109)]