19887395

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19031}}^1$

素因数の和:19066

約数の個数: 16

約数和(自身を含む): 27406080

約数和(自身を除く): 7518685

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19031, 95155, 209341, 361589, 1046705, 1807945, 3977479, 19887395]

約数ペア:

[(1, 19887395), (5, 3977479), (11, 1807945), (19, 1046705), (55, 361589), (95, 209341), (209, 95155), (1045, 19031)]