180900040

素因数分解:

$2^3\times 5^1\times {\mathrm{4522501}}^1$

素因数の和:4522512

約数の個数: 16

約数和(自身を含む): 407025180

約数和(自身を除く): 226125140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4522501, 9045002, 18090004, 22612505, 36180008, 45225010, 90450020, 180900040]

約数ペア:

[(1, 180900040), (2, 90450020), (4, 45225010), (5, 36180008), (8, 22612505), (10, 18090004), (20, 9045002), (40, 4522501)]