About the Number

87136420

87136419 ← → 87136421

2進数表記:101001100011001100010100100

漢数字表記:八千七百十三万六千四百二十

素因数分解:

2 2 × 5 1 × 7 1 × 23 1 × 27061 1

素因数の和:27100
約数の個数: 48
約数和(自身を含む): 218227968
約数和(自身を除く): 131091548

約数列:
[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 27061, 54122, 108244, 135305, 189427, 270610, 378854, 541220, 622403, 757708, 947135, 1244806, 1894270, 2489612, 3112015, 3788540, 4356821, 6224030, 8713642, 12448060, 17427284, 21784105, 43568210, 87136420]

約数ペア:
[(1, 87136420), (2, 43568210), (4, 21784105), (5, 17427284), (7, 12448060), (10, 8713642), (14, 6224030), (20, 4356821), (23, 3788540), (28, 3112015), (35, 2489612), (46, 1894270), (70, 1244806), (92, 947135), (115, 757708), (140, 622403), (161, 541220), (230, 378854), (322, 270610), (460, 189427), (644, 135305), (805, 108244), (1610, 54122), (3220, 27061)]

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