15721857

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 25683840

約数和(自身を除く): 9961983

約数列:

[1, 3, 9, 23, 27, 29, 69, 81, 87, 97, 207, 243, 261, 291, 621, 667, 783, 873, 1863, 2001, 2231, 2349, 2619, 2813, 5589, 6003, 6693, 7047, 7857, 8439, 18009, 20079, 23571, 25317, 54027, 60237, 64699, 75951, 162081, 180711, 194097, 227853, 542133, 582291, 683559, 1746873, 5240619, 15721857]

約数ペア:

[(1, 15721857), (3, 5240619), (9, 1746873), (23, 683559), (27, 582291), (29, 542133), (69, 227853), (81, 194097), (87, 180711), (97, 162081), (207, 75951), (243, 64699), (261, 60237), (291, 54027), (621, 25317), (667, 23571), (783, 20079), (873, 18009), (1863, 8439), (2001, 7857), (2231, 7047), (2349, 6693), (2619, 6003), (2813, 5589)]