80759920

素因数分解:

$2^4\times 5^1\times {\mathrm{1009499}}^1$

素因数の和:1009512

約数の個数: 20

約数和(自身を含む): 187767000

約数和(自身を除く): 107007080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009499, 2018998, 4037996, 5047495, 8075992, 10094990, 16151984, 20189980, 40379960, 80759920]

約数ペア:

[(1, 80759920), (2, 40379960), (4, 20189980), (5, 16151984), (8, 10094990), (10, 8075992), (16, 5047495), (20, 4037996), (40, 2018998), (80, 1009499)]