217620291

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{240997}}^1$

素因数の和:241050

約数の個数: 16

約数和(自身を含む): 339325184

約数和(自身を除く): 121704893

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 240997, 722991, 1686979, 5060937, 10362871, 31088613, 72540097, 217620291]

約数ペア:

[(1, 217620291), (3, 72540097), (7, 31088613), (21, 10362871), (43, 5060937), (129, 1686979), (301, 722991), (903, 240997)]