About the Number

21123248

21123247 ← → 21123249

2進数表記:1010000100101000010110000

漢数字表記:二千百十二万三千二百四十八

素因数分解:

2 4 × 17 1 × 77659 1

素因数の和:77684
約数の個数: 20
約数和(自身を含む): 43334280
約数和(自身を除く): 22211032

約数列:
[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77659, 155318, 310636, 621272, 1242544, 1320203, 2640406, 5280812, 10561624, 21123248]

約数ペア:
[(1, 21123248), (2, 10561624), (4, 5280812), (8, 2640406), (16, 1320203), (17, 1242544), (34, 621272), (68, 310636), (136, 155318), (272, 77659)]

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