78760040

素因数分解:

$2^3\times 5^1\times {\mathrm{1969001}}^1$

素因数の和:1969012

約数の個数: 16

約数和(自身を含む): 177210180

約数和(自身を除く): 98450140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1969001, 3938002, 7876004, 9845005, 15752008, 19690010, 39380020, 78760040]

約数ペア:

[(1, 78760040), (2, 39380020), (4, 19690010), (5, 15752008), (8, 9845005), (10, 7876004), (20, 3938002), (40, 1969001)]