205002009

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{61729}}^1$

素因数の和:61782

約数の個数: 20

約数和(自身を含む): 313711860

約数和(自身を除く): 108709851

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 61729, 185187, 555561, 1666683, 2530889, 5000049, 7592667, 22778001, 68334003, 205002009]

約数ペア:

[(1, 205002009), (3, 68334003), (9, 22778001), (27, 7592667), (41, 5000049), (81, 2530889), (123, 1666683), (369, 555561), (1107, 185187), (3321, 61729)]