20640184

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{10039}}^1$

素因数の和:10302

約数の個数: 16

約数和(自身を含む): 38854800

約数和(自身を除く): 18214616

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 10039, 20078, 40156, 80312, 2580023, 5160046, 10320092, 20640184]

約数ペア:

[(1, 20640184), (2, 10320092), (4, 5160046), (8, 2580023), (257, 80312), (514, 40156), (1028, 20078), (2056, 10039)]