About the Number

81681648

81681647 ← → 81681649

2進数表記:100110111100101110011110000

漢数字表記:八千百六十八万千六百四十八

素因数分解:

2 4 × 3 1 × 23 1 × 241 1 × 307 1

素因数の和:582
約数の個数: 80
約数和(自身を含む): 221819136
約数和(自身を除く): 140137488

約数列:
[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 46, 48, 69, 92, 138, 184, 241, 276, 307, 368, 482, 552, 614, 723, 921, 964, 1104, 1228, 1446, 1842, 1928, 2456, 2892, 3684, 3856, 4912, 5543, 5784, 7061, 7368, 11086, 11568, 14122, 14736, 16629, 21183, 22172, 28244, 33258, 42366, 44344, 56488, 66516, 73987, 84732, 88688, 112976, 133032, 147974, 169464, 221961, 266064, 295948, 338928, 443922, 591896, 887844, 1183792, 1701701, 1775688, 3403402, 3551376, 5105103, 6806804, 10210206, 13613608, 20420412, 27227216, 40840824, 81681648]

約数ペア:
[(1, 81681648), (2, 40840824), (3, 27227216), (4, 20420412), (6, 13613608), (8, 10210206), (12, 6806804), (16, 5105103), (23, 3551376), (24, 3403402), (46, 1775688), (48, 1701701), (69, 1183792), (92, 887844), (138, 591896), (184, 443922), (241, 338928), (276, 295948), (307, 266064), (368, 221961), (482, 169464), (552, 147974), (614, 133032), (723, 112976), (921, 88688), (964, 84732), (1104, 73987), (1228, 66516), (1446, 56488), (1842, 44344), (1928, 42366), (2456, 33258), (2892, 28244), (3684, 22172), (3856, 21183), (4912, 16629), (5543, 14736), (5784, 14122), (7061, 11568), (7368, 11086)]

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