About the Number

205942490

205942489 ← → 205942491

2進数表記:1100010001100110111011011010

漢数字表記:二億五百九十四万二千四百九十

素因数分解:

2 1 × 5 1 × 13 1 × 73 1 × 21701 1

素因数の和:21794
約数の個数: 32
約数和(自身を含む): 404698896
約数和(自身を除く): 198756406

約数列:
[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 4745, 9490, 21701, 43402, 108505, 217010, 282113, 564226, 1410565, 1584173, 2821130, 3168346, 7920865, 15841730, 20594249, 41188498, 102971245, 205942490]

約数ペア:
[(1, 205942490), (2, 102971245), (5, 41188498), (10, 20594249), (13, 15841730), (26, 7920865), (65, 3168346), (73, 2821130), (130, 1584173), (146, 1410565), (365, 564226), (730, 282113), (949, 217010), (1898, 108505), (4745, 43402), (9490, 21701)]

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