About the Number

201238989

201238988 ← → 201238990

2進数表記:1011111111101010100111001101

漢数字表記:二億百二十三万八千九百八十九

素因数分解:

3 1 × 7 1 × 67 1 × 157 1 × 911 1

素因数の和:1145
約数の個数: 32
約数和(自身を含む): 313552896
約数和(自身を除く): 112313907

約数列:
[1, 3, 7, 21, 67, 157, 201, 469, 471, 911, 1099, 1407, 2733, 3297, 6377, 10519, 19131, 31557, 61037, 73633, 143027, 183111, 220899, 427259, 429081, 1001189, 1281777, 3003567, 9582809, 28748427, 67079663, 201238989]

約数ペア:
[(1, 201238989), (3, 67079663), (7, 28748427), (21, 9582809), (67, 3003567), (157, 1281777), (201, 1001189), (469, 429081), (471, 427259), (911, 220899), (1099, 183111), (1407, 143027), (2733, 73633), (3297, 61037), (6377, 31557), (10519, 19131)]

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