978171020

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{111409}}^1$

素因数の和:111857

約数の個数: 24

約数和(自身を含む): 2058856800

約数和(自身を除く): 1080685780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 111409, 222818, 445636, 557045, 1114090, 2228180, 48908551, 97817102, 195634204, 244542755, 489085510, 978171020]

約数ペア:

[(1, 978171020), (2, 489085510), (4, 244542755), (5, 195634204), (10, 97817102), (20, 48908551), (439, 2228180), (878, 1114090), (1756, 557045), (2195, 445636), (4390, 222818), (8780, 111409)]