16820397

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2393}}^1$

素因数の和:2481

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 10069011

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 2393, 7029, 7179, 21537, 26323, 78969, 169903, 236907, 509709, 1529127, 1868933, 5606799, 16820397]

約数ペア:

[(1, 16820397), (3, 5606799), (9, 1868933), (11, 1529127), (33, 509709), (71, 236907), (99, 169903), (213, 78969), (639, 26323), (781, 21537), (2343, 7179), (2393, 7029)]