About the Number

123912880

123912879 ← → 123912881

2進数表記:111011000101100001010110000

漢数字表記:一億二千三百九十一万二千八百八十

素因数分解:

2 4 × 5 1 × 7 1 × 13 1 × 17021 1

素因数の和:17054
約数の個数: 80
約数和(自身を含む): 354602304
約数和(自身を除く): 230689424

約数列:
[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 7280, 17021, 34042, 68084, 85105, 119147, 136168, 170210, 221273, 238294, 272336, 340420, 442546, 476588, 595735, 680840, 885092, 953176, 1106365, 1191470, 1361680, 1548911, 1770184, 1906352, 2212730, 2382940, 3097822, 3540368, 4425460, 4765880, 6195644, 7744555, 8850920, 9531760, 12391288, 15489110, 17701840, 24782576, 30978220, 61956440, 123912880]

約数ペア:
[(1, 123912880), (2, 61956440), (4, 30978220), (5, 24782576), (7, 17701840), (8, 15489110), (10, 12391288), (13, 9531760), (14, 8850920), (16, 7744555), (20, 6195644), (26, 4765880), (28, 4425460), (35, 3540368), (40, 3097822), (52, 2382940), (56, 2212730), (65, 1906352), (70, 1770184), (80, 1548911), (91, 1361680), (104, 1191470), (112, 1106365), (130, 953176), (140, 885092), (182, 680840), (208, 595735), (260, 476588), (280, 442546), (364, 340420), (455, 272336), (520, 238294), (560, 221273), (728, 170210), (910, 136168), (1040, 119147), (1456, 85105), (1820, 68084), (3640, 34042), (7280, 17021)]

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