199440580

素因数分解:

$2^2\times 5^1\times {\mathrm{9972029}}^1$

素因数の和:9972038

約数の個数: 12

約数和(自身を含む): 418825260

約数和(自身を除く): 219384680

約数列:

[1, 2, 4, 5, 10, 20, 9972029, 19944058, 39888116, 49860145, 99720290, 199440580]

約数ペア:

[(1, 199440580), (2, 99720290), (4, 49860145), (5, 39888116), (10, 19944058), (20, 9972029)]