16920545

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{643}}^1$

素因数の和:944

約数の個数: 16

約数和(自身を含む): 21483840

約数和(自身を除く): 4563295

約数列:

[1, 5, 19, 95, 277, 643, 1385, 3215, 5263, 12217, 26315, 61085, 178111, 890555, 3384109, 16920545]

約数ペア:

[(1, 16920545), (5, 3384109), (19, 890555), (95, 178111), (277, 61085), (643, 26315), (1385, 12217), (3215, 5263)]