19560040

素因数分解:

$2^3\times 5^1\times {\mathrm{489001}}^1$

素因数の和:489012

約数の個数: 16

約数和(自身を含む): 44010180

約数和(自身を除く): 24450140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 489001, 978002, 1956004, 2445005, 3912008, 4890010, 9780020, 19560040]

約数ペア:

[(1, 19560040), (2, 9780020), (4, 4890010), (5, 3912008), (8, 2445005), (10, 1956004), (20, 978002), (40, 489001)]