About the Number

201230289

201230288 ← → 201230290

2進数表記:1011111111101000011111010001

漢数字表記:二億百二十三万二百八十九

素因数分解:

3 2 × 13 1 × 23 1 × 74779 1

素因数の和:74821
約数の個数: 24
約数和(自身を含む): 326639040
約数和(自身を除く): 125408751

約数列:
[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 74779, 224337, 673011, 972127, 1719917, 2916381, 5159751, 8749143, 15479253, 22358921, 67076763, 201230289]

約数ペア:
[(1, 201230289), (3, 67076763), (9, 22358921), (13, 15479253), (23, 8749143), (39, 5159751), (69, 2916381), (117, 1719917), (207, 972127), (299, 673011), (897, 224337), (2691, 74779)]

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