20086120

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2549}}^1$

素因数の和:2757

約数の個数: 32

約数和(自身を含む): 45441000

約数和(自身を除く): 25354880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2549, 3940, 5098, 7880, 10196, 12745, 20392, 25490, 50980, 101960, 502153, 1004306, 2008612, 2510765, 4017224, 5021530, 10043060, 20086120]

約数ペア:

[(1, 20086120), (2, 10043060), (4, 5021530), (5, 4017224), (8, 2510765), (10, 2008612), (20, 1004306), (40, 502153), (197, 101960), (394, 50980), (788, 25490), (985, 20392), (1576, 12745), (1970, 10196), (2549, 7880), (3940, 5098)]