20518407

素因数分解:

$3^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1193}}^1$

素因数の和:1229

約数の個数: 48

約数和(自身を含む): 38112480

約数和(自身を除く): 17594073

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 49, 63, 91, 117, 147, 189, 273, 351, 441, 637, 819, 1193, 1323, 1911, 2457, 3579, 5733, 8351, 10737, 15509, 17199, 25053, 32211, 46527, 58457, 75159, 108563, 139581, 175371, 225477, 325689, 418743, 526113, 759941, 977067, 1578339, 2279823, 2931201, 6839469, 20518407]

約数ペア:

[(1, 20518407), (3, 6839469), (7, 2931201), (9, 2279823), (13, 1578339), (21, 977067), (27, 759941), (39, 526113), (49, 418743), (63, 325689), (91, 225477), (117, 175371), (147, 139581), (189, 108563), (273, 75159), (351, 58457), (441, 46527), (637, 32211), (819, 25053), (1193, 17199), (1323, 15509), (1911, 10737), (2457, 8351), (3579, 5733)]