257319699

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{383}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 445906944

約数和(自身を除く): 188587245

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 107, 161, 273, 299, 321, 383, 483, 749, 897, 1149, 1391, 2093, 2247, 2461, 2681, 4173, 4979, 6279, 7383, 8043, 8809, 9737, 14937, 17227, 26427, 29211, 31993, 34853, 40981, 51681, 61663, 95979, 104559, 114517, 122943, 184989, 223951, 286867, 343551, 532753, 671853, 801619, 860601, 942563, 1598259, 2404857, 2827689, 3729271, 6597941, 11187813, 12253319, 19793823, 36759957, 85773233, 257319699]

約数ペア:

[(1, 257319699), (3, 85773233), (7, 36759957), (13, 19793823), (21, 12253319), (23, 11187813), (39, 6597941), (69, 3729271), (91, 2827689), (107, 2404857), (161, 1598259), (273, 942563), (299, 860601), (321, 801619), (383, 671853), (483, 532753), (749, 343551), (897, 286867), (1149, 223951), (1391, 184989), (2093, 122943), (2247, 114517), (2461, 104559), (2681, 95979), (4173, 61663), (4979, 51681), (6279, 40981), (7383, 34853), (8043, 31993), (8809, 29211), (9737, 26427), (14937, 17227)]