19985819

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{839}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 23708160

約数和(自身を除く): 3722341

約数列:

[1, 7, 41, 83, 287, 581, 839, 3403, 5873, 23821, 34399, 69637, 240793, 487459, 2855117, 19985819]

約数ペア:

[(1, 19985819), (7, 2855117), (41, 487459), (83, 240793), (287, 69637), (581, 34399), (839, 23821), (3403, 5873)]