217858081

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{7027}}^1$

素因数の和:7180

約数の個数: 16

約数和(自身を含む): 257281024

約数和(自身を除く): 39422943

約数列:

[1, 7, 43, 103, 301, 721, 4429, 7027, 31003, 49189, 302161, 723781, 2115127, 5066467, 31122583, 217858081]

約数ペア:

[(1, 217858081), (7, 31122583), (43, 5066467), (103, 2115127), (301, 723781), (721, 302161), (4429, 49189), (7027, 31003)]