About the Number

381290

381289 ← → 381291

2進数表記:1011101000101101010

漢数字表記:三十八万千二百九十

素因数分解:

2 1 × 5 1 × 7 1 × 13 1 × 419 1

素因数の和:446
約数の個数: 32
約数和(自身を含む): 846720
約数和(自身を除く): 465430

約数列:
[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 419, 455, 838, 910, 2095, 2933, 4190, 5447, 5866, 10894, 14665, 27235, 29330, 38129, 54470, 76258, 190645, 381290]

約数ペア:
[(1, 381290), (2, 190645), (5, 76258), (7, 54470), (10, 38129), (13, 29330), (14, 27235), (26, 14665), (35, 10894), (65, 5866), (70, 5447), (91, 4190), (130, 2933), (182, 2095), (419, 910), (455, 838)]

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