21704125

素因数分解:

$5^3\times {\mathrm{401}}^1\times {\mathrm{433}}^1$

素因数の和:849

約数の個数: 16

約数和(自身を含む): 27217008

約数和(自身を除く): 5512883

約数列:

[1, 5, 25, 125, 401, 433, 2005, 2165, 10025, 10825, 50125, 54125, 173633, 868165, 4340825, 21704125]

約数ペア:

[(1, 21704125), (5, 4340825), (25, 868165), (125, 173633), (401, 54125), (433, 50125), (2005, 10825), (2165, 10025)]