9788780

素因数分解:

$2^2\times 5^1\times {\mathrm{489439}}^1$

素因数の和:489448

約数の個数: 12

約数和(自身を含む): 20556480

約数和(自身を除く): 10767700

約数列:

[1, 2, 4, 5, 10, 20, 489439, 978878, 1957756, 2447195, 4894390, 9788780]

約数ペア:

[(1, 9788780), (2, 4894390), (4, 2447195), (5, 1957756), (10, 978878), (20, 489439)]