21836440

素因数分解:

$2^3\times 5^1\times {\mathrm{545911}}^1$

素因数の和:545922

約数の個数: 16

約数和(自身を含む): 49132080

約数和(自身を除く): 27295640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 545911, 1091822, 2183644, 2729555, 4367288, 5459110, 10918220, 21836440]

約数ペア:

[(1, 21836440), (2, 10918220), (4, 5459110), (5, 4367288), (8, 2729555), (10, 2183644), (20, 1091822), (40, 545911)]