2009091640

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{129119}}^1$

素因数の和:129519

約数の個数: 32

約数和(自身を含む): 4532112000

約数和(自身を除く): 2523020360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 15560, 129119, 258238, 516476, 645595, 1032952, 1291190, 2582380, 5164760, 50227291, 100454582, 200909164, 251136455, 401818328, 502272910, 1004545820, 2009091640]

約数ペア:

[(1, 2009091640), (2, 1004545820), (4, 502272910), (5, 401818328), (8, 251136455), (10, 200909164), (20, 100454582), (40, 50227291), (389, 5164760), (778, 2582380), (1556, 1291190), (1945, 1032952), (3112, 645595), (3890, 516476), (7780, 258238), (15560, 129119)]