About the Number

20809750

20809749 ← → 20809751

2進数表記:1001111011000100000010110

漢数字表記:二千八十万九千七百五十

素因数分解:

2 1 × 5 3 × 13 1 × 19 1 × 337 1

素因数の和:386
約数の個数: 64
約数和(自身を含む): 44291520
約数和(自身を除く): 23481770

約数列:
[1, 2, 5, 10, 13, 19, 25, 26, 38, 50, 65, 95, 125, 130, 190, 247, 250, 325, 337, 475, 494, 650, 674, 950, 1235, 1625, 1685, 2375, 2470, 3250, 3370, 4381, 4750, 6175, 6403, 8425, 8762, 12350, 12806, 16850, 21905, 30875, 32015, 42125, 43810, 61750, 64030, 83239, 84250, 109525, 160075, 166478, 219050, 320150, 416195, 547625, 800375, 832390, 1095250, 1600750, 2080975, 4161950, 10404875, 20809750]

約数ペア:
[(1, 20809750), (2, 10404875), (5, 4161950), (10, 2080975), (13, 1600750), (19, 1095250), (25, 832390), (26, 800375), (38, 547625), (50, 416195), (65, 320150), (95, 219050), (125, 166478), (130, 160075), (190, 109525), (247, 84250), (250, 83239), (325, 64030), (337, 61750), (475, 43810), (494, 42125), (650, 32015), (674, 30875), (950, 21905), (1235, 16850), (1625, 12806), (1685, 12350), (2375, 8762), (2470, 8425), (3250, 6403), (3370, 6175), (4381, 4750)]

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