20887748

素因数分解:

$2^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1153}}^1$

素因数の和:1811

約数の個数: 24

約数和(自身を含む): 41876352

約数和(自身を除く): 20988604

約数列:

[1, 2, 4, 7, 14, 28, 647, 1153, 1294, 2306, 2588, 4529, 4612, 8071, 9058, 16142, 18116, 32284, 745991, 1491982, 2983964, 5221937, 10443874, 20887748]

約数ペア:

[(1, 20887748), (2, 10443874), (4, 5221937), (7, 2983964), (14, 1491982), (28, 745991), (647, 32284), (1153, 18116), (1294, 16142), (2306, 9058), (2588, 8071), (4529, 4612)]