About the Number

2009017988

2009017987 ← → 2009017989

2進数表記:1110111101111110010111010000100

漢数字表記:二十億九百一万七千九百八十八

素因数分解:

2 2 × 71 1 × 83 1 × 85229 1

素因数の和:85387
約数の個数: 24
約数和(自身を含む): 3608297280
約数和(自身を除く): 1599279292

約数列:
[1, 2, 4, 71, 83, 142, 166, 284, 332, 5893, 11786, 23572, 85229, 170458, 340916, 6051259, 7074007, 12102518, 14148014, 24205036, 28296028, 502254497, 1004508994, 2009017988]

約数ペア:
[(1, 2009017988), (2, 1004508994), (4, 502254497), (71, 28296028), (83, 24205036), (142, 14148014), (166, 12102518), (284, 7074007), (332, 6051259), (5893, 340916), (11786, 170458), (23572, 85229)]

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