18818425

素因数分解:

$5^2\times {\mathrm{197}}^1\times {\mathrm{3821}}^1$

素因数の和:4028

約数の個数: 12

約数和(自身を含む): 23459436

約数和(自身を除く): 4641011

約数列:

[1, 5, 25, 197, 985, 3821, 4925, 19105, 95525, 752737, 3763685, 18818425]

約数ペア:

[(1, 18818425), (5, 3763685), (25, 752737), (197, 95525), (985, 19105), (3821, 4925)]