21742100

素因数分解:

$2^2\times 5^2\times {\mathrm{217421}}^1$

素因数の和:217435

約数の個数: 18

約数和(自身を含む): 47180574

約数和(自身を除く): 25438474

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 217421, 434842, 869684, 1087105, 2174210, 4348420, 5435525, 10871050, 21742100]

約数ペア:

[(1, 21742100), (2, 10871050), (4, 5435525), (5, 4348420), (10, 2174210), (20, 1087105), (25, 869684), (50, 434842), (100, 217421)]