20904807

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 36942080

約数和(自身を除く): 16037273

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 121, 133, 209, 231, 363, 399, 433, 627, 847, 1299, 1463, 2299, 2541, 3031, 4389, 4763, 6897, 8227, 9093, 14289, 16093, 24681, 33341, 48279, 52393, 57589, 90497, 100023, 157179, 172767, 271491, 366751, 633479, 995467, 1100253, 1900437, 2986401, 6968269, 20904807]

約数ペア:

[(1, 20904807), (3, 6968269), (7, 2986401), (11, 1900437), (19, 1100253), (21, 995467), (33, 633479), (57, 366751), (77, 271491), (121, 172767), (133, 157179), (209, 100023), (231, 90497), (363, 57589), (399, 52393), (433, 48279), (627, 33341), (847, 24681), (1299, 16093), (1463, 14289), (2299, 9093), (2541, 8227), (3031, 6897), (4389, 4763)]