256199760

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:245

約数の個数: 280

約数和(自身を含む): 936797184

約数和(自身を除く): 680597424

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 48, 54, 60, 69, 72, 80, 81, 90, 92, 108, 115, 120, 135, 138, 144, 162, 180, 184, 191, 207, 216, 230, 240, 243, 270, 276, 324, 345, 360, 368, 382, 405, 414, 432, 460, 486, 540, 552, 573, 621, 648, 690, 720, 729, 764, 810, 828, 920, 955, 972, 1035, 1080, 1104, 1146, 1215, 1242, 1296, 1380, 1458, 1528, 1620, 1656, 1719, 1840, 1863, 1910, 1944, 2070, 2160, 2292, 2430, 2484, 2760, 2865, 2916, 3056, 3105, 3240, 3312, 3438, 3645, 3726, 3820, 3888, 4140, 4393, 4584, 4860, 4968, 5157, 5520, 5589, 5730, 5832, 6210, 6480, 6876, 7290, 7452, 7640, 8280, 8595, 8786, 9168, 9315, 9720, 9936, 10314, 11178, 11460, 11664, 12420, 13179, 13752, 14580, 14904, 15280, 15471, 16560, 16767, 17190, 17572, 18630, 19440, 20628, 21965, 22356, 22920, 24840, 25785, 26358, 27504, 27945, 29160, 29808, 30942, 33534, 34380, 35144, 37260, 39537, 41256, 43930, 44712, 45840, 46413, 49680, 51570, 52716, 55890, 58320, 61884, 65895, 67068, 68760, 70288, 74520, 77355, 79074, 82512, 83835, 87860, 89424, 92826, 103140, 105432, 111780, 118611, 123768, 131790, 134136, 137520, 139239, 149040, 154710, 158148, 167670, 175720, 185652, 197685, 206280, 210864, 223560, 232065, 237222, 247536, 263580, 268272, 278478, 309420, 316296, 335340, 351440, 355833, 371304, 395370, 412560, 447120, 464130, 474444, 527160, 556956, 593055, 618840, 632592, 670680, 696195, 711666, 742608, 790740, 928260, 948888, 1054320, 1067499, 1113912, 1186110, 1237680, 1341360, 1392390, 1423332, 1581480, 1779165, 1856520, 1897776, 2134998, 2227824, 2372220, 2784780, 2846664, 3162960, 3202497, 3558330, 3713040, 4269996, 4744440, 5337495, 5569560, 5693328, 6404994, 7116660, 8539992, 9488880, 10674990, 11139120, 12809988, 14233320, 16012485, 17079984, 21349980, 25619976, 28466640, 32024970, 42699960, 51239952, 64049940, 85399920, 128099880, 256199760]

約数ペア:

[(1, 256199760), (2, 128099880), (3, 85399920), (4, 64049940), (5, 51239952), (6, 42699960), (8, 32024970), (9, 28466640), (10, 25619976), (12, 21349980), (15, 17079984), (16, 16012485), (18, 14233320), (20, 12809988), (23, 11139120), (24, 10674990), (27, 9488880), (30, 8539992), (36, 7116660), (40, 6404994), (45, 5693328), (46, 5569560), (48, 5337495), (54, 4744440), (60, 4269996), (69, 3713040), (72, 3558330), (80, 3202497), (81, 3162960), (90, 2846664), (92, 2784780), (108, 2372220), (115, 2227824), (120, 2134998), (135, 1897776), (138, 1856520), (144, 1779165), (162, 1581480), (180, 1423332), (184, 1392390), (191, 1341360), (207, 1237680), (216, 1186110), (230, 1113912), (240, 1067499), (243, 1054320), (270, 948888), (276, 928260), (324, 790740), (345, 742608), (360, 711666), (368, 696195), (382, 670680), (405, 632592), (414, 618840), (432, 593055), (460, 556956), (486, 527160), (540, 474444), (552, 464130), (573, 447120), (621, 412560), (648, 395370), (690, 371304), (720, 355833), (729, 351440), (764, 335340), (810, 316296), (828, 309420), (920, 278478), (955, 268272), (972, 263580), (1035, 247536), (1080, 237222), (1104, 232065), (1146, 223560), (1215, 210864), (1242, 206280), (1296, 197685), (1380, 185652), (1458, 175720), (1528, 167670), (1620, 158148), (1656, 154710), (1719, 149040), (1840, 139239), (1863, 137520), (1910, 134136), (1944, 131790), (2070, 123768), (2160, 118611), (2292, 111780), (2430, 105432), (2484, 103140), (2760, 92826), (2865, 89424), (2916, 87860), (3056, 83835), (3105, 82512), (3240, 79074), (3312, 77355), (3438, 74520), (3645, 70288), (3726, 68760), (3820, 67068), (3888, 65895), (4140, 61884), (4393, 58320), (4584, 55890), (4860, 52716), (4968, 51570), (5157, 49680), (5520, 46413), (5589, 45840), (5730, 44712), (5832, 43930), (6210, 41256), (6480, 39537), (6876, 37260), (7290, 35144), (7452, 34380), (7640, 33534), (8280, 30942), (8595, 29808), (8786, 29160), (9168, 27945), (9315, 27504), (9720, 26358), (9936, 25785), (10314, 24840), (11178, 22920), (11460, 22356), (11664, 21965), (12420, 20628), (13179, 19440), (13752, 18630), (14580, 17572), (14904, 17190), (15280, 16767), (15471, 16560)]