20 (Kò-Bolo ) nbozini dalbo dir-nbonu 19.
20
positive integer, abundant number, even number, dodecahedral number, pronic number, tetrahedral number, magic number, admirable number, composite number, harshad number| Name in hiero markup | V20-V20  |
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| Follows | 19 |
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| Followed by | 21 |
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| Prime factor | 2, 5 |
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| Mathematical inverse | −20 |
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| Unicode character | ⒇, ⓴, ⑳, ㉉, ⒛ |
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