19979470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{285421}}^1$

素因数の和:285435

約数の個数: 16

約数和(自身を含む): 41100768

約数和(自身を除く): 21121298

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 285421, 570842, 1427105, 1997947, 2854210, 3995894, 9989735, 19979470]

約数ペア:

[(1, 19979470), (2, 9989735), (5, 3995894), (7, 2854210), (10, 1997947), (14, 1427105), (35, 570842), (70, 285421)]