About the Number

131301891

131301890 ← → 131301892

2進数表記:111110100111000001000000011

漢数字表記:一億三千百三十万千八百九十一

素因数分解:

3 5 × 7 1 × 77191 1

素因数の和:77213
約数の個数: 24
約数和(自身を含む): 224783104
約数和(自身を除く): 93481213

約数列:
[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 77191, 231573, 540337, 694719, 1621011, 2084157, 4863033, 6252471, 14589099, 18757413, 43767297, 131301891]

約数ペア:
[(1, 131301891), (3, 43767297), (7, 18757413), (9, 14589099), (21, 6252471), (27, 4863033), (63, 2084157), (81, 1621011), (189, 694719), (243, 540337), (567, 231573), (1701, 77191)]

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