18012440

素因数分解:

$2^3\times 5^1\times {\mathrm{450311}}^1$

素因数の和:450322

約数の個数: 16

約数和(自身を含む): 40528080

約数和(自身を除く): 22515640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450311, 900622, 1801244, 2251555, 3602488, 4503110, 9006220, 18012440]

約数ペア:

[(1, 18012440), (2, 9006220), (4, 4503110), (5, 3602488), (8, 2251555), (10, 1801244), (20, 900622), (40, 450311)]