211895225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{498577}}^1$

素因数の和:498604

約数の個数: 12

約数和(自身を含む): 278206524

約数和(自身を除く): 66311299

約数列:

[1, 5, 17, 25, 85, 425, 498577, 2492885, 8475809, 12464425, 42379045, 211895225]

約数ペア:

[(1, 211895225), (5, 42379045), (17, 12464425), (25, 8475809), (85, 2492885), (425, 498577)]