12811520

素因数分解:

$2^8\times 5^1\times {\mathrm{10009}}^1$

素因数の和:10030

約数の個数: 36

約数和(自身を含む): 30690660

約数和(自身を除く): 17879140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 10009, 20018, 40036, 50045, 80072, 100090, 160144, 200180, 320288, 400360, 640576, 800720, 1281152, 1601440, 2562304, 3202880, 6405760, 12811520]

約数ペア:

[(1, 12811520), (2, 6405760), (4, 3202880), (5, 2562304), (8, 1601440), (10, 1281152), (16, 800720), (20, 640576), (32, 400360), (40, 320288), (64, 200180), (80, 160144), (128, 100090), (160, 80072), (256, 50045), (320, 40036), (640, 20018), (1280, 10009)]