About the Number

20400940

20400939 ← → 20400941

2進数表記:1001101110100101100101100

漢数字表記:二千四十万九百四十

素因数分解:

2 2 × 5 1 × 7 1 × 145721 1

素因数の和:145737
約数の個数: 24
約数和(自身を含む): 48962592
約数和(自身を除く): 28561652

約数列:
[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145721, 291442, 582884, 728605, 1020047, 1457210, 2040094, 2914420, 4080188, 5100235, 10200470, 20400940]

約数ペア:
[(1, 20400940), (2, 10200470), (4, 5100235), (5, 4080188), (7, 2914420), (10, 2040094), (14, 1457210), (20, 1020047), (28, 728605), (35, 582884), (70, 291442), (140, 145721)]

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