280178283

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{1553}}^1$

素因数の和:1656

約数の個数: 48

約数和(自身を含む): 476195328

約数和(自身を除く): 196017045

約数列:

[1, 3, 7, 11, 21, 33, 71, 77, 121, 213, 231, 363, 497, 781, 847, 1491, 1553, 2343, 2541, 4659, 5467, 8591, 10871, 16401, 17083, 25773, 32613, 51249, 60137, 110263, 119581, 180411, 187913, 330789, 358743, 563739, 771841, 1212893, 1315391, 2315523, 3638679, 3946173, 8490251, 13341823, 25470753, 40025469, 93392761, 280178283]

約数ペア:

[(1, 280178283), (3, 93392761), (7, 40025469), (11, 25470753), (21, 13341823), (33, 8490251), (71, 3946173), (77, 3638679), (121, 2315523), (213, 1315391), (231, 1212893), (363, 771841), (497, 563739), (781, 358743), (847, 330789), (1491, 187913), (1553, 180411), (2343, 119581), (2541, 110263), (4659, 60137), (5467, 51249), (8591, 32613), (10871, 25773), (16401, 17083)]