#logarithm question

20 messages · Page 1 of 1 (latest)

chilly parcel
hollow geyserBOT
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lusty spruce
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,rotate

ornate ridgeBOT
lusty spruce
# chilly parcel

You can show that $\prod_{d\mid n}d=n^{\tau(n)/2}$, where $\tau(n)$ counts the number of divisors

ornate ridgeBOT
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Omegabet_

lusty spruce
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to which you get an explicit value of x

chilly parcel
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yeah I saw this formula just today

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But

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this question can be solved without the formula

lusty spruce
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I assume it can be

chilly parcel
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that's what I'm looking for

lusty spruce
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ig argue how many divisors are between 1 and 10, 10 and 100, 100 and 1000,...?

chilly parcel
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What will that achieve

lusty spruce
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lets you determine what integers x lies between I believe

lusty spruce
mortal crag
# chilly parcel

@chilly parcel do you know the formula for number of divisors of a particular number?

faint yacht
# chilly parcel

all positive divisors of a number n ranges between 1 to sqrt(n)

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so in your case you just need to check up to 10⁴