18012040

素因数分解:

$2^3\times 5^1\times {\mathrm{450301}}^1$

素因数の和:450312

約数の個数: 16

約数和(自身を含む): 40527180

約数和(自身を除く): 22515140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450301, 900602, 1801204, 2251505, 3602408, 4503010, 9006020, 18012040]

約数ペア:

[(1, 18012040), (2, 9006020), (4, 4503010), (5, 3602408), (8, 2251505), (10, 1801204), (20, 900602), (40, 450301)]