219998009

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{27739}}^1$

素因数の和:27860

約数の個数: 16

約数和(自身を含む): 276956160

約数和(自身を除く): 56958151

約数列:

[1, 7, 11, 77, 103, 721, 1133, 7931, 27739, 194173, 305129, 2135903, 2857117, 19999819, 31428287, 219998009]

約数ペア:

[(1, 219998009), (7, 31428287), (11, 19999819), (77, 2857117), (103, 2135903), (721, 305129), (1133, 194173), (7931, 27739)]