80821040

素因数分解:

$2^4\times 5^1\times {\mathrm{1010263}}^1$

素因数の和:1010276

約数の個数: 20

約数和(自身を含む): 187909104

約数和(自身を除く): 107088064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1010263, 2020526, 4041052, 5051315, 8082104, 10102630, 16164208, 20205260, 40410520, 80821040]

約数ペア:

[(1, 80821040), (2, 40410520), (4, 20205260), (5, 16164208), (8, 10102630), (10, 8082104), (16, 5051315), (20, 4041052), (40, 2020526), (80, 1010263)]