About the Number

20407940

20407939 ← → 20407941

2進数表記:1001101110110011010000100

漢数字表記:二千四十万七千九百四十

素因数分解:

2 2 × 5 1 × 7 1 × 145771 1

素因数の和:145787
約数の個数: 24
約数和(自身を含む): 48979392
約数和(自身を除く): 28571452

約数列:
[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145771, 291542, 583084, 728855, 1020397, 1457710, 2040794, 2915420, 4081588, 5101985, 10203970, 20407940]

約数ペア:
[(1, 20407940), (2, 10203970), (4, 5101985), (5, 4081588), (7, 2915420), (10, 2040794), (14, 1457710), (20, 1020397), (28, 728855), (35, 583084), (70, 291542), (140, 145771)]

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