20618540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10009}}^1$

素因数の和:10121

約数の個数: 24

約数和(自身を含む): 43723680

約数和(自身を除く): 23105140

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10009, 20018, 40036, 50045, 100090, 200180, 1030927, 2061854, 4123708, 5154635, 10309270, 20618540]

約数ペア:

[(1, 20618540), (2, 10309270), (4, 5154635), (5, 4123708), (10, 2061854), (20, 1030927), (103, 200180), (206, 100090), (412, 50045), (515, 40036), (1030, 20018), (2060, 10009)]