21150081

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{17939}}^1$

素因数の和:18076

約数の個数: 12

約数和(自身を含む): 30785040

約数和(自身を除く): 9634959

約数列:

[1, 3, 9, 131, 393, 1179, 17939, 53817, 161451, 2350009, 7050027, 21150081]

約数ペア:

[(1, 21150081), (3, 7050027), (9, 2350009), (131, 161451), (393, 53817), (1179, 17939)]