18404725

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 23790888

約数和(自身を除く): 5386163

約数列:

[1, 5, 25, 37, 101, 185, 197, 505, 925, 985, 2525, 3737, 4925, 7289, 18685, 19897, 36445, 93425, 99485, 182225, 497425, 736189, 3680945, 18404725]

約数ペア:

[(1, 18404725), (5, 3680945), (25, 736189), (37, 497425), (101, 182225), (185, 99485), (197, 93425), (505, 36445), (925, 19897), (985, 18685), (2525, 7289), (3737, 4925)]