21671397

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{479}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 34295040

約数和(自身を除く): 12623643

約数列:

[1, 3, 9, 11, 33, 99, 457, 479, 1371, 1437, 4113, 4311, 5027, 5269, 15081, 15807, 45243, 47421, 218903, 656709, 1970127, 2407933, 7223799, 21671397]

約数ペア:

[(1, 21671397), (3, 7223799), (9, 2407933), (11, 1970127), (33, 656709), (99, 218903), (457, 47421), (479, 45243), (1371, 15807), (1437, 15081), (4113, 5269), (4311, 5027)]