About the Number

31138688

31138687 ← → 31138689

2進数表記:1110110110010001110000000

漢数字表記:三千百十三万八千六百八十八

素因数分解:

2 7 × 7 1 × 23 1 × 1511 1

素因数の和:1555
約数の個数: 64
約数和(自身を含む): 74027520
約数和(自身を除く): 42888832

約数列:
[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 322, 368, 448, 644, 736, 896, 1288, 1472, 1511, 2576, 2944, 3022, 5152, 6044, 10304, 10577, 12088, 20608, 21154, 24176, 34753, 42308, 48352, 69506, 84616, 96704, 139012, 169232, 193408, 243271, 278024, 338464, 486542, 556048, 676928, 973084, 1112096, 1353856, 1946168, 2224192, 3892336, 4448384, 7784672, 15569344, 31138688]

約数ペア:
[(1, 31138688), (2, 15569344), (4, 7784672), (7, 4448384), (8, 3892336), (14, 2224192), (16, 1946168), (23, 1353856), (28, 1112096), (32, 973084), (46, 676928), (56, 556048), (64, 486542), (92, 338464), (112, 278024), (128, 243271), (161, 193408), (184, 169232), (224, 139012), (322, 96704), (368, 84616), (448, 69506), (644, 48352), (736, 42308), (896, 34753), (1288, 24176), (1472, 21154), (1511, 20608), (2576, 12088), (2944, 10577), (3022, 10304), (5152, 6044)]

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