1990323748

素因数分解:

$2^2\times 7^2\times {\mathrm{10154713}}^1$

素因数の和:10154731

約数の個数: 18

約数和(自身を含む): 4051730886

約数和(自身を除く): 2061407138

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 10154713, 20309426, 40618852, 71082991, 142165982, 284331964, 497580937, 995161874, 1990323748]

約数ペア:

[(1, 1990323748), (2, 995161874), (4, 497580937), (7, 284331964), (14, 142165982), (28, 71082991), (49, 40618852), (98, 20309426), (196, 10154713)]