About the Number

138720439

138720438 ← → 138720440

2進数表記:1000010001001011010010110111

漢数字表記:一億三千八百七十二万四百三十九

素因数分解:

11 1 × 13 2 × 71 1 × 1051 1

素因数の和:1159
約数の個数: 24
約数和(自身を含む): 166333824
約数和(自身を除く): 27613385

約数列:
[1, 11, 13, 71, 143, 169, 781, 923, 1051, 1859, 10153, 11561, 11999, 13663, 74621, 131989, 150293, 177619, 820831, 970073, 1953809, 10670803, 12610949, 138720439]

約数ペア:
[(1, 138720439), (11, 12610949), (13, 10670803), (71, 1953809), (143, 970073), (169, 820831), (781, 177619), (923, 150293), (1051, 131989), (1859, 74621), (10153, 13663), (11561, 11999)]

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