18628100

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{1709}}^1$

素因数の和:1832

約数の個数: 36

約数和(自身を含む): 40817700

約数和(自身を除く): 22189600

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 1709, 2180, 2725, 3418, 5450, 6836, 8545, 10900, 17090, 34180, 42725, 85450, 170900, 186281, 372562, 745124, 931405, 1862810, 3725620, 4657025, 9314050, 18628100]

約数ペア:

[(1, 18628100), (2, 9314050), (4, 4657025), (5, 3725620), (10, 1862810), (20, 931405), (25, 745124), (50, 372562), (100, 186281), (109, 170900), (218, 85450), (436, 42725), (545, 34180), (1090, 17090), (1709, 10900), (2180, 8545), (2725, 6836), (3418, 5450)]