About the Number

81970728

81970727 ← → 81970729

2進数表記:100111000101100011000101000

漢数字表記:八千百九十七万七百二十八

素因数分解:

2 3 × 3 1 × 7 2 × 43 1 × 1621 1

素因数の和:1687
約数の個数: 96
約数和(自身を含む): 244078560
約数和(自身を除く): 162107832

約数列:
[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 43, 49, 56, 84, 86, 98, 129, 147, 168, 172, 196, 258, 294, 301, 344, 392, 516, 588, 602, 903, 1032, 1176, 1204, 1621, 1806, 2107, 2408, 3242, 3612, 4214, 4863, 6321, 6484, 7224, 8428, 9726, 11347, 12642, 12968, 16856, 19452, 22694, 25284, 34041, 38904, 45388, 50568, 68082, 69703, 79429, 90776, 136164, 139406, 158858, 209109, 238287, 272328, 278812, 317716, 418218, 476574, 487921, 557624, 635432, 836436, 953148, 975842, 1463763, 1672872, 1906296, 1951684, 2927526, 3415447, 3903368, 5855052, 6830894, 10246341, 11710104, 13661788, 20492682, 27323576, 40985364, 81970728]

約数ペア:
[(1, 81970728), (2, 40985364), (3, 27323576), (4, 20492682), (6, 13661788), (7, 11710104), (8, 10246341), (12, 6830894), (14, 5855052), (21, 3903368), (24, 3415447), (28, 2927526), (42, 1951684), (43, 1906296), (49, 1672872), (56, 1463763), (84, 975842), (86, 953148), (98, 836436), (129, 635432), (147, 557624), (168, 487921), (172, 476574), (196, 418218), (258, 317716), (294, 278812), (301, 272328), (344, 238287), (392, 209109), (516, 158858), (588, 139406), (602, 136164), (903, 90776), (1032, 79429), (1176, 69703), (1204, 68082), (1621, 50568), (1806, 45388), (2107, 38904), (2408, 34041), (3242, 25284), (3612, 22694), (4214, 19452), (4863, 16856), (6321, 12968), (6484, 12642), (7224, 11347), (8428, 9726)]

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