1280800

素因数分解:

$2^5\times 5^2\times {\mathrm{1601}}^1$

素因数の和:1621

約数の個数: 36

約数和(自身を含む): 3128706

約数和(自身を除く): 1847906

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 1601, 3202, 6404, 8005, 12808, 16010, 25616, 32020, 40025, 51232, 64040, 80050, 128080, 160100, 256160, 320200, 640400, 1280800]

約数ペア:

[(1, 1280800), (2, 640400), (4, 320200), (5, 256160), (8, 160100), (10, 128080), (16, 80050), (20, 64040), (25, 51232), (32, 40025), (40, 32020), (50, 25616), (80, 16010), (100, 12808), (160, 8005), (200, 6404), (400, 3202), (800, 1601)]