About the Number

19980004

19980003 ← → 19980005

2進数表記:1001100001101111011100100

漢数字表記:千九百九十八万四

素因数分解:

2 2 × 11 2 × 41281 1

素因数の和:41307
約数の個数: 18
約数和(自身を含む): 38433542
約数和(自身を除く): 18453538

約数列:
[1, 2, 4, 11, 22, 44, 121, 242, 484, 41281, 82562, 165124, 454091, 908182, 1816364, 4995001, 9990002, 19980004]

約数ペア:
[(1, 19980004), (2, 9990002), (4, 4995001), (11, 1816364), (22, 908182), (44, 454091), (121, 165124), (242, 82562), (484, 41281)]

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