2220387920

素因数分解:

$2^4\times 5^1\times {\mathrm{27754849}}^1$

素因数の和:27754862

約数の個数: 20

約数和(自身を含む): 5162402100

約数和(自身を除く): 2942014180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 27754849, 55509698, 111019396, 138774245, 222038792, 277548490, 444077584, 555096980, 1110193960, 2220387920]

約数ペア:

[(1, 2220387920), (2, 1110193960), (4, 555096980), (5, 444077584), (8, 277548490), (10, 222038792), (16, 138774245), (20, 111019396), (40, 55509698), (80, 27754849)]