About the Number

21004172

21004171 ← → 21004173

2進数表記:1010000000111111110001100

漢数字表記:二千百万四千百七十二

素因数分解:

2 2 × 7 1 × 103 1 × 7283 1

素因数の和:7397
約数の個数: 24
約数和(自身を含む): 42422016
約数和(自身を除く): 21417844

約数列:
[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 7283, 14566, 29132, 50981, 101962, 203924, 750149, 1500298, 3000596, 5251043, 10502086, 21004172]

約数ペア:
[(1, 21004172), (2, 10502086), (4, 5251043), (7, 3000596), (14, 1500298), (28, 750149), (103, 203924), (206, 101962), (412, 50981), (721, 29132), (1442, 14566), (2884, 7283)]

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