About the Number

12881640

12881639 ← → 12881641

2進数表記:110001001000111011101000

漢数字表記:千二百八十八万千六百四十

素因数分解:

2 3 × 3 1 × 5 1 × 107347 1

素因数の和:107361
約数の個数: 32
約数和(自身を含む): 38645280
約数和(自身を除く): 25763640

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 107347, 214694, 322041, 429388, 536735, 644082, 858776, 1073470, 1288164, 1610205, 2146940, 2576328, 3220410, 4293880, 6440820, 12881640]

約数ペア:
[(1, 12881640), (2, 6440820), (3, 4293880), (4, 3220410), (5, 2576328), (6, 2146940), (8, 1610205), (10, 1288164), (12, 1073470), (15, 858776), (20, 644082), (24, 536735), (30, 429388), (40, 322041), (60, 214694), (120, 107347)]

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