20411080

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7187}}^1$

素因数の和:7269

約数の個数: 32

約数和(自身を含む): 46578240

約数和(自身を除く): 26167160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7187, 14374, 28748, 35935, 57496, 71870, 143740, 287480, 510277, 1020554, 2041108, 2551385, 4082216, 5102770, 10205540, 20411080]

約数ペア:

[(1, 20411080), (2, 10205540), (4, 5102770), (5, 4082216), (8, 2551385), (10, 2041108), (20, 1020554), (40, 510277), (71, 287480), (142, 143740), (284, 71870), (355, 57496), (568, 35935), (710, 28748), (1420, 14374), (2840, 7187)]