20667215

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:502

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 4613425

約数列:

[1, 5, 131, 139, 227, 655, 695, 1135, 18209, 29737, 31553, 91045, 148685, 157765, 4133443, 20667215]

約数ペア:

[(1, 20667215), (5, 4133443), (131, 157765), (139, 148685), (227, 91045), (655, 31553), (695, 29737), (1135, 18209)]