About the Number

81285225

81285224 ← → 81285226

2進数表記:100110110000101000001101001

漢数字表記:八千百二十八万五千二百二十五

素因数分解:

3 1 × 5 2 × 7 1 × 107 1 × 1447 1

素因数の和:1574
約数の個数: 48
約数和(自身を含む): 155132928
約数和(自身を除く): 73847703

約数列:
[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 107, 175, 321, 525, 535, 749, 1447, 1605, 2247, 2675, 3745, 4341, 7235, 8025, 10129, 11235, 18725, 21705, 30387, 36175, 50645, 56175, 108525, 151935, 154829, 253225, 464487, 759675, 774145, 1083803, 2322435, 3251409, 3870725, 5419015, 11612175, 16257045, 27095075, 81285225]

約数ペア:
[(1, 81285225), (3, 27095075), (5, 16257045), (7, 11612175), (15, 5419015), (21, 3870725), (25, 3251409), (35, 2322435), (75, 1083803), (105, 774145), (107, 759675), (175, 464487), (321, 253225), (525, 154829), (535, 151935), (749, 108525), (1447, 56175), (1605, 50645), (2247, 36175), (2675, 30387), (3745, 21705), (4341, 18725), (7235, 11235), (8025, 10129)]

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