The number 266,760 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 13 15 18 19 20 24 26 27 30 36 38 39 40 45 52 54 57 60 65 72 76 78 90 95 104 108 114 117 120 130 135 152 156 171 180 190 195 216 228 234 247 260 270 285 312 342 351 360 380 390 456 468 494 513 520 540 570 585 684 702 741 760 780 855 936 988 1,026 1,080 1,140 1,170 1,235 1,368 1,404 1,482 1,560 1,710 1,755 1,976 2,052 2,223 2,280 2,340 2,470 2,565 2,808 2,964 3,420 3,510 3,705 4,104 4,446 4,680 4,940 5,130 5,928 6,669 6,840 7,020 7,410 8,892 9,880 10,260 11,115 13,338 14,040 14,820 17,784 20,520 22,230 26,676 29,640 33,345 44,460 53,352 66,690 88,920 133,380 and 266,760, with no remainder.
Since 266,760 cannot be divided by just 1 and 266,760, it is a composite number.