About the Number

2005280

2005279 ← → 2005281

2進数表記:111101001100100100000

漢数字表記:二百万五千二百八十

素因数分解:

2 5 × 5 1 × 83 1 × 151 1

素因数の和:249
約数の個数: 48
約数和(自身を含む): 4826304
約数和(自身を除く): 2821024

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 151, 160, 166, 302, 332, 415, 604, 664, 755, 830, 1208, 1328, 1510, 1660, 2416, 2656, 3020, 3320, 4832, 6040, 6640, 12080, 12533, 13280, 24160, 25066, 50132, 62665, 100264, 125330, 200528, 250660, 401056, 501320, 1002640, 2005280]

約数ペア:
[(1, 2005280), (2, 1002640), (4, 501320), (5, 401056), (8, 250660), (10, 200528), (16, 125330), (20, 100264), (32, 62665), (40, 50132), (80, 25066), (83, 24160), (151, 13280), (160, 12533), (166, 12080), (302, 6640), (332, 6040), (415, 4832), (604, 3320), (664, 3020), (755, 2656), (830, 2416), (1208, 1660), (1328, 1510)]

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