20728899

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{45161}}^1$

素因数の和:45187

約数の個数: 16

約数和(自身を含む): 32516640

約数和(自身を除く): 11787741

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 45161, 135483, 406449, 767737, 1219347, 2303211, 6909633, 20728899]

約数ペア:

[(1, 20728899), (3, 6909633), (9, 2303211), (17, 1219347), (27, 767737), (51, 406449), (153, 135483), (459, 45161)]