About the Number

201131091

201131090 ← → 201131092

2進数表記:1011111111010000010001010011

漢数字表記:二億百十三万千九十一

素因数分解:

3 2 × 7 1 × 61 1 × 199 1 × 263 1

素因数の和:536
約数の個数: 48
約数和(自身を含む): 340454400
約数和(自身を除く): 139323309

約数列:
[1, 3, 7, 9, 21, 61, 63, 183, 199, 263, 427, 549, 597, 789, 1281, 1393, 1791, 1841, 2367, 3843, 4179, 5523, 12139, 12537, 16043, 16569, 36417, 48129, 52337, 84973, 109251, 112301, 144387, 157011, 254919, 336903, 366359, 471033, 764757, 1010709, 1099077, 3192557, 3297231, 9577671, 22347899, 28733013, 67043697, 201131091]

約数ペア:
[(1, 201131091), (3, 67043697), (7, 28733013), (9, 22347899), (21, 9577671), (61, 3297231), (63, 3192557), (183, 1099077), (199, 1010709), (263, 764757), (427, 471033), (549, 366359), (597, 336903), (789, 254919), (1281, 157011), (1393, 144387), (1791, 112301), (1841, 109251), (2367, 84973), (3843, 52337), (4179, 48129), (5523, 36417), (12139, 16569), (12537, 16043)]

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