21264243

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 38986752

約数和(自身を除く): 17722509

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 73, 77, 91, 97, 143, 219, 231, 273, 291, 429, 511, 679, 803, 949, 1001, 1067, 1261, 1533, 2037, 2409, 2847, 3003, 3201, 3783, 5621, 6643, 7081, 7469, 8827, 10439, 13871, 16863, 19929, 21243, 22407, 26481, 31317, 41613, 49567, 73073, 77891, 92053, 97097, 148701, 219219, 233673, 276159, 291291, 545237, 644371, 1012583, 1635711, 1933113, 3037749, 7088081, 21264243]

約数ペア:

[(1, 21264243), (3, 7088081), (7, 3037749), (11, 1933113), (13, 1635711), (21, 1012583), (33, 644371), (39, 545237), (73, 291291), (77, 276159), (91, 233673), (97, 219219), (143, 148701), (219, 97097), (231, 92053), (273, 77891), (291, 73073), (429, 49567), (511, 41613), (679, 31317), (803, 26481), (949, 22407), (1001, 21243), (1067, 19929), (1261, 16863), (1533, 13871), (2037, 10439), (2409, 8827), (2847, 7469), (3003, 7081), (3201, 6643), (3783, 5621)]