388640217

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{8501}}^1$

素因数の和:8829

約数の個数: 24

約数和(自身を含む): 604798272

約数和(自身を除く): 216158055

約数列:

[1, 3, 7, 21, 49, 147, 311, 933, 2177, 6531, 8501, 15239, 25503, 45717, 59507, 178521, 416549, 1249647, 2643811, 7931433, 18506677, 55520031, 129546739, 388640217]

約数ペア:

[(1, 388640217), (3, 129546739), (7, 55520031), (21, 18506677), (49, 7931433), (147, 2643811), (311, 1249647), (933, 416549), (2177, 178521), (6531, 59507), (8501, 45717), (15239, 25503)]