About the Number

138974980

138974979 ← → 138974981

2進数表記:1000010010001001011100000100

漢数字表記:一億三千八百九十七万四千九百八十

素因数分解:

2 2 × 5 1 × 139 1 × 49991 1

素因数の和:50139
約数の個数: 24
約数和(自身を含む): 293952960
約数和(自身を除く): 154977980

約数列:
[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 49991, 99982, 199964, 249955, 499910, 999820, 6948749, 13897498, 27794996, 34743745, 69487490, 138974980]

約数ペア:
[(1, 138974980), (2, 69487490), (4, 34743745), (5, 27794996), (10, 13897498), (20, 6948749), (139, 999820), (278, 499910), (556, 249955), (695, 199964), (1390, 99982), (2780, 49991)]

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