Sub-string Divisibility
The number, , is a to pandigital number because it is made up of each of the digits to in some order, but it also has a rather interesting sub-string divisibility property.
Let be the st digit, be the nd digit, and so on. In this way, we note the following:
- is divisible by
- is divisible by
- is divisible by
- is divisible by
- is divisible by
- is divisible by
- is divisible by
Find the sum of all to pandigital numbers with this property.
子串的可整除性
是一个至全数字数,因为它由到这十个数字排列而成;但除此之外,它还有一个有趣的性质:子串的可整除性。
记是它的第个数字,是第个数字,依此类推,注意到:
- 能被整除
- 能被整除
- 能被整除
- 能被整除
- 能被整除
- 能被整除
- 能被整除
找出所有满足同样性质的至全数字数,并求它们的和。
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