39408080

素因数分解:

$2^4\times 5^1\times {\mathrm{492601}}^1$

素因数の和:492614

約数の個数: 20

約数和(自身を含む): 91623972

約数和(自身を除く): 52215892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 492601, 985202, 1970404, 2463005, 3940808, 4926010, 7881616, 9852020, 19704040, 39408080]

約数ペア:

[(1, 39408080), (2, 19704040), (4, 9852020), (5, 7881616), (8, 4926010), (10, 3940808), (16, 2463005), (20, 1970404), (40, 985202), (80, 492601)]