About the Number

209439390

209439389 ← → 209439391

2進数表記:1100011110111100101010011110

漢数字表記:二億九百四十三万九千三百九十

素因数分解:

2 1 × 3 1 × 5 1 × 6981313 1

素因数の和:6981323
約数の個数: 16
約数和(自身を含む): 502654608
約数和(自身を除く): 293215218

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 6981313, 13962626, 20943939, 34906565, 41887878, 69813130, 104719695, 209439390]

約数ペア:
[(1, 209439390), (2, 104719695), (3, 69813130), (5, 41887878), (6, 34906565), (10, 20943939), (15, 13962626), (30, 6981313)]

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