16987761

素因数分解:

$3^2\times 7^3\times {\mathrm{5503}}^1$

素因数の和:5530

約数の個数: 24

約数和(自身を含む): 28620800

約数和(自身を除く): 11633039

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 5503, 16509, 38521, 49527, 115563, 269647, 346689, 808941, 1887529, 2426823, 5662587, 16987761]

約数ペア:

[(1, 16987761), (3, 5662587), (7, 2426823), (9, 1887529), (21, 808941), (49, 346689), (63, 269647), (147, 115563), (343, 49527), (441, 38521), (1029, 16509), (3087, 5503)]