18989380

素因数分解:

$2^2\times 5^1\times {\mathrm{941}}^1\times {\mathrm{1009}}^1$

素因数の和:1959

約数の個数: 24

約数和(自身を含む): 39959640

約数和(自身を除く): 20970260

約数列:

[1, 2, 4, 5, 10, 20, 941, 1009, 1882, 2018, 3764, 4036, 4705, 5045, 9410, 10090, 18820, 20180, 949469, 1898938, 3797876, 4747345, 9494690, 18989380]

約数ペア:

[(1, 18989380), (2, 9494690), (4, 4747345), (5, 3797876), (10, 1898938), (20, 949469), (941, 20180), (1009, 18820), (1882, 10090), (2018, 9410), (3764, 5045), (4036, 4705)]