27985820

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{7103}}^1$

素因数の和:7309

約数の個数: 24

約数和(自身を含む): 59076864

約数和(自身を除く): 31091044

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 7103, 14206, 28412, 35515, 71030, 142060, 1399291, 2798582, 5597164, 6996455, 13992910, 27985820]

約数ペア:

[(1, 27985820), (2, 13992910), (4, 6996455), (5, 5597164), (10, 2798582), (20, 1399291), (197, 142060), (394, 71030), (788, 35515), (985, 28412), (1970, 14206), (3940, 7103)]