18665139

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{563}}^1$

素因数の和:866

約数の個数: 16

約数和(自身を含む): 25610112

約数和(自身を除く): 6944973

約数列:

[1, 3, 43, 129, 257, 563, 771, 1689, 11051, 24209, 33153, 72627, 144691, 434073, 6221713, 18665139]

約数ペア:

[(1, 18665139), (3, 6221713), (43, 434073), (129, 144691), (257, 72627), (563, 33153), (771, 24209), (1689, 11051)]