About the Number

389999920

389999919 ← → 389999921

2進数表記:10111001111101110110100110000

漢数字表記:三億八千九百九十九万九千九百二十

素因数分解:

2 4 × 5 1 × 4874999 1

素因数の和:4875012
約数の個数: 20
約数和(自身を含む): 906750000
約数和(自身を除く): 516750080

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4874999, 9749998, 19499996, 24374995, 38999992, 48749990, 77999984, 97499980, 194999960, 389999920]

約数ペア:
[(1, 389999920), (2, 194999960), (4, 97499980), (5, 77999984), (8, 48749990), (10, 38999992), (16, 24374995), (20, 19499996), (40, 9749998), (80, 4874999)]

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