19903491

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{53939}}^1$

素因数の和:53986

約数の個数: 12

約数和(自身を含む): 29451240

約数和(自身を除く): 9547749

約数列:

[1, 3, 9, 41, 123, 369, 53939, 161817, 485451, 2211499, 6634497, 19903491]

約数ペア:

[(1, 19903491), (3, 6634497), (9, 2211499), (41, 485451), (123, 161817), (369, 53939)]