18680225

素因数分解:

$5^2\times {\mathrm{349}}^1\times {\mathrm{2141}}^1$

素因数の和:2500

約数の個数: 12

約数和(自身を含む): 23240700

約数和(自身を除く): 4560475

約数列:

[1, 5, 25, 349, 1745, 2141, 8725, 10705, 53525, 747209, 3736045, 18680225]

約数ペア:

[(1, 18680225), (5, 3736045), (25, 747209), (349, 53525), (1745, 10705), (2141, 8725)]