205121600

素因数分解:

$2^6\times 5^2\times {\mathrm{128201}}^1$

素因数の和:128223

約数の個数: 42

約数和(自身を含む): 504731274

約数和(自身を除く): 299609674

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 128201, 256402, 512804, 641005, 1025608, 1282010, 2051216, 2564020, 3205025, 4102432, 5128040, 6410050, 8204864, 10256080, 12820100, 20512160, 25640200, 41024320, 51280400, 102560800, 205121600]

約数ペア:

[(1, 205121600), (2, 102560800), (4, 51280400), (5, 41024320), (8, 25640200), (10, 20512160), (16, 12820100), (20, 10256080), (25, 8204864), (32, 6410050), (40, 5128040), (50, 4102432), (64, 3205025), (80, 2564020), (100, 2051216), (160, 1282010), (200, 1025608), (320, 641005), (400, 512804), (800, 256402), (1600, 128201)]