About the Number

231388280

231388279 ← → 231388281

2進数表記:1101110010101011010001111000

漢数字表記:二億三千百三十八万八千二百八十

素因数分解:

2 3 × 5 1 × 23 1 × 163 1 × 1543 1

素因数の和:1740
約数の個数: 64
約数和(自身を含む): 546946560
約数和(自身を除く): 315558280

約数列:
[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 163, 184, 230, 326, 460, 652, 815, 920, 1304, 1543, 1630, 3086, 3260, 3749, 6172, 6520, 7498, 7715, 12344, 14996, 15430, 18745, 29992, 30860, 35489, 37490, 61720, 70978, 74980, 141956, 149960, 177445, 251509, 283912, 354890, 503018, 709780, 1006036, 1257545, 1419560, 2012072, 2515090, 5030180, 5784707, 10060360, 11569414, 23138828, 28923535, 46277656, 57847070, 115694140, 231388280]

約数ペア:
[(1, 231388280), (2, 115694140), (4, 57847070), (5, 46277656), (8, 28923535), (10, 23138828), (20, 11569414), (23, 10060360), (40, 5784707), (46, 5030180), (92, 2515090), (115, 2012072), (163, 1419560), (184, 1257545), (230, 1006036), (326, 709780), (460, 503018), (652, 354890), (815, 283912), (920, 251509), (1304, 177445), (1543, 149960), (1630, 141956), (3086, 74980), (3260, 70978), (3749, 61720), (6172, 37490), (6520, 35489), (7498, 30860), (7715, 29992), (12344, 18745), (14996, 15430)]

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