factor string with ten number to 840

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Accepted Answer

I'll write the factors of 840, and then we can see how many there are.  I have no control over how long the list is.The factors of 840 are . . .1,  2,  3,  4,  5,  6,  7,  8,  10,  12,  14,  20,  21,  24,  28,  30,  35,  40,  42,  60,  70,  84,  105,  120,  140,  168,  210,  280,  420, and  840.840 actually has  30  factors !  What a number !