About the Number

20004020

20004019 ← → 20004021

2進数表記:1001100010011110010110100

漢数字表記:二千万四千二十

素因数分解:

2 2 × 5 1 × 23 1 × 43487 1

素因数の和:43519
約数の個数: 24
約数和(自身を含む): 43835904
約数和(自身を除く): 23831884

約数列:
[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43487, 86974, 173948, 217435, 434870, 869740, 1000201, 2000402, 4000804, 5001005, 10002010, 20004020]

約数ペア:
[(1, 20004020), (2, 10002010), (4, 5001005), (5, 4000804), (10, 2000402), (20, 1000201), (23, 869740), (46, 434870), (92, 217435), (115, 173948), (230, 86974), (460, 43487)]

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