243781225

素因数分解:

$5^2\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{653}}^1$

素因数の和:909

約数の個数: 24

約数和(自身を含む): 307759320

約数和(自身を除く): 63978095

約数列:

[1, 5, 25, 109, 137, 545, 653, 685, 2725, 3265, 3425, 14933, 16325, 71177, 74665, 89461, 355885, 373325, 447305, 1779425, 2236525, 9751249, 48756245, 243781225]

約数ペア:

[(1, 243781225), (5, 48756245), (25, 9751249), (109, 2236525), (137, 1779425), (545, 447305), (653, 373325), (685, 355885), (2725, 89461), (3265, 74665), (3425, 71177), (14933, 16325)]