18805225

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 24115520

約数和(自身を除く): 5310295

約数列:

[1, 5, 25, 67, 103, 109, 335, 515, 545, 1675, 2575, 2725, 6901, 7303, 11227, 34505, 36515, 56135, 172525, 182575, 280675, 752209, 3761045, 18805225]

約数ペア:

[(1, 18805225), (5, 3761045), (25, 752209), (67, 280675), (103, 182575), (109, 172525), (335, 56135), (515, 36515), (545, 34505), (1675, 11227), (2575, 7303), (2725, 6901)]