81209520

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:201

約数の個数: 320

約数和(自身を含む): 329978880

約数和(自身を除く): 248769360

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, 41, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 82, 84, 90, 105, 108, 112, 120, 123, 126, 131, 135, 140, 144, 164, 168, 180, 189, 205, 210, 216, 240, 246, 252, 262, 270, 280, 287, 315, 328, 336, 360, 369, 378, 393, 410, 420, 432, 492, 504, 524, 540, 560, 574, 615, 630, 655, 656, 720, 738, 756, 786, 820, 840, 861, 917, 945, 984, 1008, 1048, 1080, 1107, 1148, 1179, 1230, 1260, 1310, 1435, 1476, 1512, 1572, 1640, 1680, 1722, 1834, 1845, 1890, 1965, 1968, 2096, 2160, 2214, 2296, 2358, 2460, 2520, 2583, 2620, 2751, 2870, 2952, 3024, 3144, 3280, 3444, 3537, 3668, 3690, 3780, 3930, 4305, 4428, 4585, 4592, 4716, 4920, 5040, 5166, 5240, 5371, 5502, 5535, 5740, 5895, 5904, 6288, 6888, 7074, 7336, 7380, 7560, 7749, 7860, 8253, 8610, 8856, 9170, 9432, 9840, 10332, 10480, 10742, 11004, 11070, 11480, 11790, 12915, 13755, 13776, 14148, 14672, 14760, 15120, 15498, 15720, 16113, 16506, 17220, 17685, 17712, 18340, 18864, 20664, 21484, 22008, 22140, 22960, 23580, 24759, 25830, 26855, 27510, 28296, 29520, 30996, 31440, 32226, 33012, 34440, 35370, 36680, 37597, 38745, 41265, 41328, 42968, 44016, 44280, 47160, 48339, 49518, 51660, 53710, 55020, 56592, 61992, 64452, 66024, 68880, 70740, 73360, 75194, 77490, 80565, 82530, 85936, 88560, 94320, 96678, 99036, 103320, 107420, 110040, 112791, 123795, 123984, 128904, 132048, 141480, 145017, 150388, 154980, 161130, 165060, 187985, 193356, 198072, 206640, 214840, 220080, 225582, 241695, 247590, 257808, 282960, 290034, 300776, 309960, 322260, 330120, 338373, 375970, 386712, 396144, 429680, 451164, 483390, 495180, 563955, 580068, 601552, 619920, 644520, 660240, 676746, 725085, 751940, 773424, 902328, 966780, 990360, 1015119, 1127910, 1160136, 1289040, 1353492, 1450170, 1503880, 1691865, 1804656, 1933560, 1980720, 2030238, 2255820, 2320272, 2706984, 2900340, 3007760, 3383730, 3867120, 4060476, 4511640, 5075595, 5413968, 5800680, 6767460, 8120952, 9023280, 10151190, 11601360, 13534920, 16241904, 20302380, 27069840, 40604760, 81209520]

約数ペア:

[(1, 81209520), (2, 40604760), (3, 27069840), (4, 20302380), (5, 16241904), (6, 13534920), (7, 11601360), (8, 10151190), (9, 9023280), (10, 8120952), (12, 6767460), (14, 5800680), (15, 5413968), (16, 5075595), (18, 4511640), (20, 4060476), (21, 3867120), (24, 3383730), (27, 3007760), (28, 2900340), (30, 2706984), (35, 2320272), (36, 2255820), (40, 2030238), (41, 1980720), (42, 1933560), (45, 1804656), (48, 1691865), (54, 1503880), (56, 1450170), (60, 1353492), (63, 1289040), (70, 1160136), (72, 1127910), (80, 1015119), (82, 990360), (84, 966780), (90, 902328), (105, 773424), (108, 751940), (112, 725085), (120, 676746), (123, 660240), (126, 644520), (131, 619920), (135, 601552), (140, 580068), (144, 563955), (164, 495180), (168, 483390), (180, 451164), (189, 429680), (205, 396144), (210, 386712), (216, 375970), (240, 338373), (246, 330120), (252, 322260), (262, 309960), (270, 300776), (280, 290034), (287, 282960), (315, 257808), (328, 247590), (336, 241695), (360, 225582), (369, 220080), (378, 214840), (393, 206640), (410, 198072), (420, 193356), (432, 187985), (492, 165060), (504, 161130), (524, 154980), (540, 150388), (560, 145017), (574, 141480), (615, 132048), (630, 128904), (655, 123984), (656, 123795), (720, 112791), (738, 110040), (756, 107420), (786, 103320), (820, 99036), (840, 96678), (861, 94320), (917, 88560), (945, 85936), (984, 82530), (1008, 80565), (1048, 77490), (1080, 75194), (1107, 73360), (1148, 70740), (1179, 68880), (1230, 66024), (1260, 64452), (1310, 61992), (1435, 56592), (1476, 55020), (1512, 53710), (1572, 51660), (1640, 49518), (1680, 48339), (1722, 47160), (1834, 44280), (1845, 44016), (1890, 42968), (1965, 41328), (1968, 41265), (2096, 38745), (2160, 37597), (2214, 36680), (2296, 35370), (2358, 34440), (2460, 33012), (2520, 32226), (2583, 31440), (2620, 30996), (2751, 29520), (2870, 28296), (2952, 27510), (3024, 26855), (3144, 25830), (3280, 24759), (3444, 23580), (3537, 22960), (3668, 22140), (3690, 22008), (3780, 21484), (3930, 20664), (4305, 18864), (4428, 18340), (4585, 17712), (4592, 17685), (4716, 17220), (4920, 16506), (5040, 16113), (5166, 15720), (5240, 15498), (5371, 15120), (5502, 14760), (5535, 14672), (5740, 14148), (5895, 13776), (5904, 13755), (6288, 12915), (6888, 11790), (7074, 11480), (7336, 11070), (7380, 11004), (7560, 10742), (7749, 10480), (7860, 10332), (8253, 9840), (8610, 9432), (8856, 9170)]