21, 42, 63, 84, 105, 126, 147, 168, 189, 210 and just keep adding 21 until you get to 987.
floor(1000/8)=125
Multiples? There are an infinite amount. Factors on the other hand, there are: 1, 3, 7 and 21.
4
1 21370
21, 42, 63, 84
Factors: 1, 3, 7, 21 Multiples: 21, 42, 63, 84 and so on.
Factors of 21 = 1, 3, 7, 21 Multiples of 21: 21, 42, 63, 84, 105, 126, 147 +21 . . .
-21 and -1
Multiples? There are an infinite amount. Factors on the other hand, there are: 1, 3, 7 and 21.
floor(1000/8)=125
333
4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100.
4
1 21370
Factors: 1, 3, 7, 21. Multiples: 21, 42, 63, 84, 105, 126, 147, 168, 189, 210 +21 . . .
21, 42, 63, 84
1 and 7