About the Number

123121728

123121727 ← → 123121729

2進数表記:111010101101011000001000000

漢数字表記:一億二千三百十二万千七百二十八

素因数分解:

2 6 × 3 3 × 43 1 × 1657 1

素因数の和:1721
約数の個数: 112
約数和(自身を含む): 370596160
約数和(自身を除く): 247474432

約数列:
[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 43, 48, 54, 64, 72, 86, 96, 108, 129, 144, 172, 192, 216, 258, 288, 344, 387, 432, 516, 576, 688, 774, 864, 1032, 1161, 1376, 1548, 1657, 1728, 2064, 2322, 2752, 3096, 3314, 4128, 4644, 4971, 6192, 6628, 8256, 9288, 9942, 12384, 13256, 14913, 18576, 19884, 24768, 26512, 29826, 37152, 39768, 44739, 53024, 59652, 71251, 74304, 79536, 89478, 106048, 119304, 142502, 159072, 178956, 213753, 238608, 285004, 318144, 357912, 427506, 477216, 570008, 641259, 715824, 855012, 954432, 1140016, 1282518, 1431648, 1710024, 1923777, 2280032, 2565036, 2863296, 3420048, 3847554, 4560064, 5130072, 6840096, 7695108, 10260144, 13680192, 15390216, 20520288, 30780432, 41040576, 61560864, 123121728]

約数ペア:
[(1, 123121728), (2, 61560864), (3, 41040576), (4, 30780432), (6, 20520288), (8, 15390216), (9, 13680192), (12, 10260144), (16, 7695108), (18, 6840096), (24, 5130072), (27, 4560064), (32, 3847554), (36, 3420048), (43, 2863296), (48, 2565036), (54, 2280032), (64, 1923777), (72, 1710024), (86, 1431648), (96, 1282518), (108, 1140016), (129, 954432), (144, 855012), (172, 715824), (192, 641259), (216, 570008), (258, 477216), (288, 427506), (344, 357912), (387, 318144), (432, 285004), (516, 238608), (576, 213753), (688, 178956), (774, 159072), (864, 142502), (1032, 119304), (1161, 106048), (1376, 89478), (1548, 79536), (1657, 74304), (1728, 71251), (2064, 59652), (2322, 53024), (2752, 44739), (3096, 39768), (3314, 37152), (4128, 29826), (4644, 26512), (4971, 24768), (6192, 19884), (6628, 18576), (8256, 14913), (9288, 13256), (9942, 12384)]

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