20057807

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:252

約数の個数: 36

約数和(自身を含む): 27291600

約数和(自身を除く): 7233793

約数列:

[1, 7, 11, 17, 49, 77, 119, 121, 187, 199, 539, 833, 847, 1309, 1393, 2057, 2189, 3383, 5929, 9163, 9751, 14399, 15323, 23681, 24079, 37213, 100793, 107261, 165767, 168553, 260491, 409343, 1179871, 1823437, 2865401, 20057807]

約数ペア:

[(1, 20057807), (7, 2865401), (11, 1823437), (17, 1179871), (49, 409343), (77, 260491), (119, 168553), (121, 165767), (187, 107261), (199, 100793), (539, 37213), (833, 24079), (847, 23681), (1309, 15323), (1393, 14399), (2057, 9751), (2189, 9163), (3383, 5929)]