15721317

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 24192000

約数和(自身を除く): 8470683

約数列:

[1, 3, 9, 27, 59, 71, 139, 177, 213, 417, 531, 639, 1251, 1593, 1917, 3753, 4189, 8201, 9869, 12567, 24603, 29607, 37701, 73809, 88821, 113103, 221427, 266463, 582271, 1746813, 5240439, 15721317]

約数ペア:

[(1, 15721317), (3, 5240439), (9, 1746813), (27, 582271), (59, 266463), (71, 221427), (139, 113103), (177, 88821), (213, 73809), (417, 37701), (531, 29607), (639, 24603), (1251, 12567), (1593, 9869), (1917, 8201), (3753, 4189)]