21292029

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{479}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 33696000

約数和(自身を除く): 12403971

約数列:

[1, 3, 9, 11, 33, 99, 449, 479, 1347, 1437, 4041, 4311, 4939, 5269, 14817, 15807, 44451, 47421, 215071, 645213, 1935639, 2365781, 7097343, 21292029]

約数ペア:

[(1, 21292029), (3, 7097343), (9, 2365781), (11, 1935639), (33, 645213), (99, 215071), (449, 47421), (479, 44451), (1347, 15807), (1437, 14817), (4041, 5269), (4311, 4939)]