80745520

素因数分解:

$2^4\times 5^1\times {\mathrm{1009319}}^1$

素因数の和:1009332

約数の個数: 20

約数和(自身を含む): 187733520

約数和(自身を除く): 106988000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009319, 2018638, 4037276, 5046595, 8074552, 10093190, 16149104, 20186380, 40372760, 80745520]

約数ペア:

[(1, 80745520), (2, 40372760), (4, 20186380), (5, 16149104), (8, 10093190), (10, 8074552), (16, 5046595), (20, 4037276), (40, 2018638), (80, 1009319)]