19906520

素因数分解:

$2^3\times 5^1\times {\mathrm{497663}}^1$

素因数の和:497674

約数の個数: 16

約数和(自身を含む): 44789760

約数和(自身を除く): 24883240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497663, 995326, 1990652, 2488315, 3981304, 4976630, 9953260, 19906520]

約数ペア:

[(1, 19906520), (2, 9953260), (4, 4976630), (5, 3981304), (8, 2488315), (10, 1990652), (20, 995326), (40, 497663)]