18940820

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4759}}^1$

素因数の和:4967

約数の個数: 24

約数和(自身を含む): 39984000

約数和(自身を除く): 21043180

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4759, 9518, 19036, 23795, 47590, 95180, 947041, 1894082, 3788164, 4735205, 9470410, 18940820]

約数ペア:

[(1, 18940820), (2, 9470410), (4, 4735205), (5, 3788164), (10, 1894082), (20, 947041), (199, 95180), (398, 47590), (796, 23795), (995, 19036), (1990, 9518), (3980, 4759)]