Numbers with 1-20 Factors
for the First 100 or So Numbers?
Sorted By The # of Factors

1 ***	2	3 √√√	4	5 ∆∆∆	6	7 ΩΩΩ	8	9 ∑∑∑	10	11	12	13	14	15	16	17	18	19	20
1	2	4	6	16	12	30	24	36	48
	3	9	8		18	32	40
	5	25	10		20		42
	7	49	14		28
	11		15		44
	13		21		45
	17		22		50
	19		26
	23		27
	29		33
	31		34
	37		35
	41		38
	43		39
	47		46