28293820

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7109}}^1$

素因数の和:7317

約数の個数: 24

約数和(自身を含む): 59724000

約数和(自身を除く): 31430180

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7109, 14218, 28436, 35545, 71090, 142180, 1414691, 2829382, 5658764, 7073455, 14146910, 28293820]

約数ペア:

[(1, 28293820), (2, 14146910), (4, 7073455), (5, 5658764), (10, 2829382), (20, 1414691), (199, 142180), (398, 71090), (796, 35545), (995, 28436), (1990, 14218), (3980, 7109)]