389640951

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{131591}}^1$

素因数の和:131651

約数の個数: 24

約数和(自身を含む): 656907264

約数和(自身を除く): 267266313

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 131591, 394773, 921137, 1184319, 2763411, 6184777, 8290233, 18554331, 43293439, 55662993, 129880317, 389640951]

約数ペア:

[(1, 389640951), (3, 129880317), (7, 55662993), (9, 43293439), (21, 18554331), (47, 8290233), (63, 6184777), (141, 2763411), (329, 1184319), (423, 921137), (987, 394773), (2961, 131591)]