About the Number

81001408

81001407 ← → 81001409

2進数表記:100110100111111101111000000

漢数字表記:八千百万千四百八

素因数分解:

2 6 × 19 1 × 29 1 × 2297 1

素因数の和:2357
約数の個数: 56
約数和(自身を含む): 175107600
約数和(自身を除く): 94106192

約数列:
[1, 2, 4, 8, 16, 19, 29, 32, 38, 58, 64, 76, 116, 152, 232, 304, 464, 551, 608, 928, 1102, 1216, 1856, 2204, 2297, 4408, 4594, 8816, 9188, 17632, 18376, 35264, 36752, 43643, 66613, 73504, 87286, 133226, 147008, 174572, 266452, 349144, 532904, 698288, 1065808, 1265647, 1396576, 2131616, 2531294, 2793152, 4263232, 5062588, 10125176, 20250352, 40500704, 81001408]

約数ペア:
[(1, 81001408), (2, 40500704), (4, 20250352), (8, 10125176), (16, 5062588), (19, 4263232), (29, 2793152), (32, 2531294), (38, 2131616), (58, 1396576), (64, 1265647), (76, 1065808), (116, 698288), (152, 532904), (232, 349144), (304, 266452), (464, 174572), (551, 147008), (608, 133226), (928, 87286), (1102, 73504), (1216, 66613), (1856, 43643), (2204, 36752), (2297, 35264), (4408, 18376), (4594, 17632), (8816, 9188)]

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