19709380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9041}}^1$

素因数の和:9159

約数の個数: 24

約数和(自身を含む): 41774040

約数和(自身を除く): 22064660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9041, 18082, 36164, 45205, 90410, 180820, 985469, 1970938, 3941876, 4927345, 9854690, 19709380]

約数ペア:

[(1, 19709380), (2, 9854690), (4, 4927345), (5, 3941876), (10, 1970938), (20, 985469), (109, 180820), (218, 90410), (436, 45205), (545, 36164), (1090, 18082), (2180, 9041)]