About the Number

201285

201284 ← → 201286

2進数表記:110001001001000101

漢数字表記:二十万千二百八十五

素因数分解:

3 4 × 5 1 × 7 1 × 71 1

素因数の和:95
約数の個数: 40
約数和(自身を含む): 418176
約数和(自身を除く): 216891

約数列:
[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 71, 81, 105, 135, 189, 213, 315, 355, 405, 497, 567, 639, 945, 1065, 1491, 1917, 2485, 2835, 3195, 4473, 5751, 7455, 9585, 13419, 22365, 28755, 40257, 67095, 201285]

約数ペア:
[(1, 201285), (3, 67095), (5, 40257), (7, 28755), (9, 22365), (15, 13419), (21, 9585), (27, 7455), (35, 5751), (45, 4473), (63, 3195), (71, 2835), (81, 2485), (105, 1917), (135, 1491), (189, 1065), (213, 945), (315, 639), (355, 567), (405, 497)]

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