278340381

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{8443}}^1$

素因数の和:8503

約数の個数: 40

約数和(自身を含む): 465906144

約数和(自身を除く): 187565763

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 891, 999, 1221, 2997, 3663, 8443, 10989, 25329, 32967, 75987, 92873, 227961, 278619, 312391, 683883, 835857, 937173, 2507571, 2811519, 3436301, 7522713, 8434557, 10308903, 25303671, 30926709, 92780127, 278340381]

約数ペア:

[(1, 278340381), (3, 92780127), (9, 30926709), (11, 25303671), (27, 10308903), (33, 8434557), (37, 7522713), (81, 3436301), (99, 2811519), (111, 2507571), (297, 937173), (333, 835857), (407, 683883), (891, 312391), (999, 278619), (1221, 227961), (2997, 92873), (3663, 75987), (8443, 32967), (10989, 25329)]