128520459

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{280001}}^1$

素因数の和:280027

約数の個数: 16

約数和(自身を含む): 201601440

約数和(自身を除く): 73080981

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 280001, 840003, 2520009, 4760017, 7560027, 14280051, 42840153, 128520459]

約数ペア:

[(1, 128520459), (3, 42840153), (9, 14280051), (17, 7560027), (27, 4760017), (51, 2520009), (153, 840003), (459, 280001)]