9788894020

素因数分解:

$2^2\times 5^1\times {\mathrm{489444701}}^1$

素因数の和:489444710

約数の個数: 12

約数和(自身を含む): 20556677484

約数和(自身を除く): 10767783464

約数列:

[1, 2, 4, 5, 10, 20, 489444701, 978889402, 1957778804, 2447223505, 4894447010, 9788894020]

約数ペア:

[(1, 9788894020), (2, 4894447010), (4, 2447223505), (5, 1957778804), (10, 978889402), (20, 489444701)]