About the Number

21006987201

21006987200 ← → 21006987202

2進数表記:10011100100000111010010111111000001

漢数字表記:二百十億六百九十八万七千二百一

素因数分解:

3 6 × 29 1 × 137 1 × 7253 1

素因数の和:7437
約数の個数: 56
約数和(自身を含む): 32824495080
約数和(自身を除く): 11817507879

約数列:
[1, 3, 9, 27, 29, 81, 87, 137, 243, 261, 411, 729, 783, 1233, 2349, 3699, 3973, 7047, 7253, 11097, 11919, 21141, 21759, 33291, 35757, 65277, 99873, 107271, 195831, 210337, 321813, 587493, 631011, 965439, 993661, 1762479, 1893033, 2896317, 2980983, 5287437, 5679099, 8942949, 17037297, 26828847, 28816169, 51111891, 80486541, 86448507, 153335673, 241459623, 259345521, 724378869, 778036563, 2334109689, 7002329067, 21006987201]

約数ペア:
[(1, 21006987201), (3, 7002329067), (9, 2334109689), (27, 778036563), (29, 724378869), (81, 259345521), (87, 241459623), (137, 153335673), (243, 86448507), (261, 80486541), (411, 51111891), (729, 28816169), (783, 26828847), (1233, 17037297), (2349, 8942949), (3699, 5679099), (3973, 5287437), (7047, 2980983), (7253, 2896317), (11097, 1893033), (11919, 1762479), (21141, 993661), (21759, 965439), (33291, 631011), (35757, 587493), (65277, 321813), (99873, 210337), (107271, 195831)]

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