12940205

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{433}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 16040640

約数和(自身を除く): 3100435

約数列:

[1, 5, 43, 139, 215, 433, 695, 2165, 5977, 18619, 29885, 60187, 93095, 300935, 2588041, 12940205]

約数ペア:

[(1, 12940205), (5, 2588041), (43, 300935), (139, 93095), (215, 60187), (433, 29885), (695, 18619), (2165, 5977)]