82819820

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{20809}}^1$

素因数の和:21017

約数の個数: 24

約数和(自身を含む): 174804000

約数和(自身を除く): 91984180

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 20809, 41618, 83236, 104045, 208090, 416180, 4140991, 8281982, 16563964, 20704955, 41409910, 82819820]

約数ペア:

[(1, 82819820), (2, 41409910), (4, 20704955), (5, 16563964), (10, 8281982), (20, 4140991), (199, 416180), (398, 208090), (796, 104045), (995, 83236), (1990, 41618), (3980, 20809)]