About the Number

213781680

213781679 ← → 213781681

2進数表記:1100101111100000110010110000

漢数字表記:二億千三百七十八万千六百八十

素因数分解:

2 4 × 3 5 × 5 1 × 7 1 × 1571 1

素因数の和:1606
約数の個数: 240
約数和(自身を含む): 851445504
約数和(自身を除く): 637663824

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 162, 168, 180, 189, 210, 216, 240, 243, 252, 270, 280, 315, 324, 336, 360, 378, 405, 420, 432, 486, 504, 540, 560, 567, 630, 648, 720, 756, 810, 840, 945, 972, 1008, 1080, 1134, 1215, 1260, 1296, 1512, 1571, 1620, 1680, 1701, 1890, 1944, 2160, 2268, 2430, 2520, 2835, 3024, 3142, 3240, 3402, 3780, 3888, 4536, 4713, 4860, 5040, 5670, 6284, 6480, 6804, 7560, 7855, 8505, 9072, 9426, 9720, 10997, 11340, 12568, 13608, 14139, 15120, 15710, 17010, 18852, 19440, 21994, 22680, 23565, 25136, 27216, 28278, 31420, 32991, 34020, 37704, 42417, 43988, 45360, 47130, 54985, 56556, 62840, 65982, 68040, 70695, 75408, 84834, 87976, 94260, 98973, 109970, 113112, 125680, 127251, 131964, 136080, 141390, 164955, 169668, 175952, 188520, 197946, 212085, 219940, 226224, 254502, 263928, 282780, 296919, 329910, 339336, 377040, 381753, 395892, 424170, 439880, 494865, 509004, 527856, 565560, 593838, 636255, 659820, 678672, 763506, 791784, 848340, 879760, 890757, 989730, 1018008, 1131120, 1187676, 1272510, 1319640, 1484595, 1527012, 1583568, 1696680, 1781514, 1908765, 1979460, 2036016, 2375352, 2545020, 2639280, 2672271, 2969190, 3054024, 3393360, 3563028, 3817530, 3958920, 4453785, 4750704, 5090040, 5344542, 5938380, 6108048, 7126056, 7635060, 7917840, 8907570, 10180080, 10689084, 11876760, 13361355, 14252112, 15270120, 17815140, 21378168, 23753520, 26722710, 30540240, 35630280, 42756336, 53445420, 71260560, 106890840, 213781680]

約数ペア:
[(1, 213781680), (2, 106890840), (3, 71260560), (4, 53445420), (5, 42756336), (6, 35630280), (7, 30540240), (8, 26722710), (9, 23753520), (10, 21378168), (12, 17815140), (14, 15270120), (15, 14252112), (16, 13361355), (18, 11876760), (20, 10689084), (21, 10180080), (24, 8907570), (27, 7917840), (28, 7635060), (30, 7126056), (35, 6108048), (36, 5938380), (40, 5344542), (42, 5090040), (45, 4750704), (48, 4453785), (54, 3958920), (56, 3817530), (60, 3563028), (63, 3393360), (70, 3054024), (72, 2969190), (80, 2672271), (81, 2639280), (84, 2545020), (90, 2375352), (105, 2036016), (108, 1979460), (112, 1908765), (120, 1781514), (126, 1696680), (135, 1583568), (140, 1527012), (144, 1484595), (162, 1319640), (168, 1272510), (180, 1187676), (189, 1131120), (210, 1018008), (216, 989730), (240, 890757), (243, 879760), (252, 848340), (270, 791784), (280, 763506), (315, 678672), (324, 659820), (336, 636255), (360, 593838), (378, 565560), (405, 527856), (420, 509004), (432, 494865), (486, 439880), (504, 424170), (540, 395892), (560, 381753), (567, 377040), (630, 339336), (648, 329910), (720, 296919), (756, 282780), (810, 263928), (840, 254502), (945, 226224), (972, 219940), (1008, 212085), (1080, 197946), (1134, 188520), (1215, 175952), (1260, 169668), (1296, 164955), (1512, 141390), (1571, 136080), (1620, 131964), (1680, 127251), (1701, 125680), (1890, 113112), (1944, 109970), (2160, 98973), (2268, 94260), (2430, 87976), (2520, 84834), (2835, 75408), (3024, 70695), (3142, 68040), (3240, 65982), (3402, 62840), (3780, 56556), (3888, 54985), (4536, 47130), (4713, 45360), (4860, 43988), (5040, 42417), (5670, 37704), (6284, 34020), (6480, 32991), (6804, 31420), (7560, 28278), (7855, 27216), (8505, 25136), (9072, 23565), (9426, 22680), (9720, 21994), (10997, 19440), (11340, 18852), (12568, 17010), (13608, 15710), (14139, 15120)]

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