About the Number

21042007

21042006 ← → 21042008

2進数表記:1010000010001001101010111

漢数字表記:二千百四万二千七

素因数分解:

7 1 × 43 1 × 53 1 × 1319 1

素因数の和:1422
約数の個数: 16
約数和(自身を含む): 25090560
約数和(自身を除く): 4048553

約数列:
[1, 7, 43, 53, 301, 371, 1319, 2279, 9233, 15953, 56717, 69907, 397019, 489349, 3006001, 21042007]

約数ペア:
[(1, 21042007), (7, 3006001), (43, 489349), (53, 397019), (301, 69907), (371, 56717), (1319, 15953), (2279, 9233)]

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