About the Number

289012256

289012255 ← → 289012257

2進数表記:10001001110011111101000100000

漢数字表記:二億八千九百一万二千二百五十六

素因数分解:

2 5 × 13 1 × 31 1 × 73 1 × 307 1

素因数の和:434
約数の個数: 96
約数和(自身を含む): 643281408
約数和(自身を除く): 354269152

約数列:
[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 73, 104, 124, 146, 208, 248, 292, 307, 403, 416, 496, 584, 614, 806, 949, 992, 1168, 1228, 1612, 1898, 2263, 2336, 2456, 3224, 3796, 3991, 4526, 4912, 6448, 7592, 7982, 9052, 9517, 9824, 12896, 15184, 15964, 18104, 19034, 22411, 29419, 30368, 31928, 36208, 38068, 44822, 58838, 63856, 72416, 76136, 89644, 117676, 123721, 127712, 152272, 179288, 235352, 247442, 291343, 304544, 358576, 470704, 494884, 582686, 694741, 717152, 941408, 989768, 1165372, 1389482, 1979536, 2330744, 2778964, 3959072, 4661488, 5557928, 9031633, 9322976, 11115856, 18063266, 22231712, 36126532, 72253064, 144506128, 289012256]

約数ペア:
[(1, 289012256), (2, 144506128), (4, 72253064), (8, 36126532), (13, 22231712), (16, 18063266), (26, 11115856), (31, 9322976), (32, 9031633), (52, 5557928), (62, 4661488), (73, 3959072), (104, 2778964), (124, 2330744), (146, 1979536), (208, 1389482), (248, 1165372), (292, 989768), (307, 941408), (403, 717152), (416, 694741), (496, 582686), (584, 494884), (614, 470704), (806, 358576), (949, 304544), (992, 291343), (1168, 247442), (1228, 235352), (1612, 179288), (1898, 152272), (2263, 127712), (2336, 123721), (2456, 117676), (3224, 89644), (3796, 76136), (3991, 72416), (4526, 63856), (4912, 58838), (6448, 44822), (7592, 38068), (7982, 36208), (9052, 31928), (9517, 30368), (9824, 29419), (12896, 22411), (15184, 19034), (15964, 18104)]

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