389640321

素因数分解:

$3^3\times 7^1\times {\mathrm{2061589}}^1$

素因数の和:2061605

約数の個数: 16

約数和(自身を含む): 659708800

約数和(自身を除く): 270068479

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 2061589, 6184767, 14431123, 18554301, 43293369, 55662903, 129880107, 389640321]

約数ペア:

[(1, 389640321), (3, 129880107), (7, 55662903), (9, 43293369), (21, 18554301), (27, 14431123), (63, 6184767), (189, 2061589)]