About the Number

18388840

18388839 ← → 18388841

2進数表記:1000110001001011101101000

漢数字表記:千八百三十八万八千八百四十

素因数分解:

2 3 × 5 1 × 269 1 × 1709 1

素因数の和:1989
約数の個数: 32
約数和(自身を含む): 41553000
約数和(自身を除く): 23164160

約数列:
[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1709, 2152, 2690, 3418, 5380, 6836, 8545, 10760, 13672, 17090, 34180, 68360, 459721, 919442, 1838884, 2298605, 3677768, 4597210, 9194420, 18388840]

約数ペア:
[(1, 18388840), (2, 9194420), (4, 4597210), (5, 3677768), (8, 2298605), (10, 1838884), (20, 919442), (40, 459721), (269, 68360), (538, 34180), (1076, 17090), (1345, 13672), (1709, 10760), (2152, 8545), (2690, 6836), (3418, 5380)]

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