About the Number

21007966

21007965 ← → 21007967

2進数表記:1010000001000111001011110

漢数字表記:二千百万七千九百六十六

素因数分解:

2 1 × 7 2 × 47 1 × 4561 1

素因数の和:4624
約数の個数: 24
約数和(自身を含む): 37444896
約数和(自身を除く): 16436930

約数列:
[1, 2, 7, 14, 47, 49, 94, 98, 329, 658, 2303, 4561, 4606, 9122, 31927, 63854, 214367, 223489, 428734, 446978, 1500569, 3001138, 10503983, 21007966]

約数ペア:
[(1, 21007966), (2, 10503983), (7, 3001138), (14, 1500569), (47, 446978), (49, 428734), (94, 223489), (98, 214367), (329, 63854), (658, 31927), (2303, 9122), (4561, 4606)]

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