21431520

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1$

素因数の和:87

約数の個数: 288

約数和(自身を含む): 84460320

約数和(自身を除く): 63028800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 41, 44, 45, 48, 54, 55, 60, 66, 72, 80, 82, 88, 90, 96, 99, 108, 110, 120, 121, 123, 132, 135, 144, 160, 164, 165, 176, 180, 198, 205, 216, 220, 240, 242, 246, 264, 270, 288, 297, 328, 330, 352, 360, 363, 369, 396, 410, 432, 440, 451, 480, 484, 492, 495, 528, 540, 594, 605, 615, 656, 660, 720, 726, 738, 792, 820, 864, 880, 902, 968, 984, 990, 1056, 1080, 1089, 1107, 1188, 1210, 1230, 1312, 1320, 1353, 1440, 1452, 1476, 1485, 1584, 1640, 1760, 1804, 1815, 1845, 1936, 1968, 1980, 2160, 2178, 2214, 2255, 2376, 2420, 2460, 2640, 2706, 2904, 2952, 2970, 3168, 3267, 3280, 3608, 3630, 3690, 3872, 3936, 3960, 4059, 4320, 4356, 4428, 4510, 4752, 4840, 4920, 4961, 5280, 5412, 5445, 5535, 5808, 5904, 5940, 6534, 6560, 6765, 7216, 7260, 7380, 7920, 8118, 8712, 8856, 9020, 9504, 9680, 9840, 9922, 10824, 10890, 11070, 11616, 11808, 11880, 12177, 13068, 13530, 14432, 14520, 14760, 14883, 15840, 16236, 16335, 17424, 17712, 18040, 19360, 19680, 19844, 20295, 21648, 21780, 22140, 23760, 24354, 24805, 26136, 27060, 29040, 29520, 29766, 32472, 32670, 34848, 35424, 36080, 39688, 40590, 43296, 43560, 44280, 44649, 47520, 48708, 49610, 52272, 54120, 58080, 59040, 59532, 60885, 64944, 65340, 72160, 74415, 79376, 81180, 87120, 88560, 89298, 97416, 99220, 104544, 108240, 119064, 121770, 129888, 130680, 133947, 148830, 158752, 162360, 174240, 177120, 178596, 194832, 198440, 216480, 223245, 238128, 243540, 261360, 267894, 297660, 324720, 357192, 389664, 396880, 446490, 476256, 487080, 522720, 535788, 595320, 649440, 669735, 714384, 793760, 892980, 974160, 1071576, 1190640, 1339470, 1428768, 1785960, 1948320, 2143152, 2381280, 2678940, 3571920, 4286304, 5357880, 7143840, 10715760, 21431520]

約数ペア:

[(1, 21431520), (2, 10715760), (3, 7143840), (4, 5357880), (5, 4286304), (6, 3571920), (8, 2678940), (9, 2381280), (10, 2143152), (11, 1948320), (12, 1785960), (15, 1428768), (16, 1339470), (18, 1190640), (20, 1071576), (22, 974160), (24, 892980), (27, 793760), (30, 714384), (32, 669735), (33, 649440), (36, 595320), (40, 535788), (41, 522720), (44, 487080), (45, 476256), (48, 446490), (54, 396880), (55, 389664), (60, 357192), (66, 324720), (72, 297660), (80, 267894), (82, 261360), (88, 243540), (90, 238128), (96, 223245), (99, 216480), (108, 198440), (110, 194832), (120, 178596), (121, 177120), (123, 174240), (132, 162360), (135, 158752), (144, 148830), (160, 133947), (164, 130680), (165, 129888), (176, 121770), (180, 119064), (198, 108240), (205, 104544), (216, 99220), (220, 97416), (240, 89298), (242, 88560), (246, 87120), (264, 81180), (270, 79376), (288, 74415), (297, 72160), (328, 65340), (330, 64944), (352, 60885), (360, 59532), (363, 59040), (369, 58080), (396, 54120), (410, 52272), (432, 49610), (440, 48708), (451, 47520), (480, 44649), (484, 44280), (492, 43560), (495, 43296), (528, 40590), (540, 39688), (594, 36080), (605, 35424), (615, 34848), (656, 32670), (660, 32472), (720, 29766), (726, 29520), (738, 29040), (792, 27060), (820, 26136), (864, 24805), (880, 24354), (902, 23760), (968, 22140), (984, 21780), (990, 21648), (1056, 20295), (1080, 19844), (1089, 19680), (1107, 19360), (1188, 18040), (1210, 17712), (1230, 17424), (1312, 16335), (1320, 16236), (1353, 15840), (1440, 14883), (1452, 14760), (1476, 14520), (1485, 14432), (1584, 13530), (1640, 13068), (1760, 12177), (1804, 11880), (1815, 11808), (1845, 11616), (1936, 11070), (1968, 10890), (1980, 10824), (2160, 9922), (2178, 9840), (2214, 9680), (2255, 9504), (2376, 9020), (2420, 8856), (2460, 8712), (2640, 8118), (2706, 7920), (2904, 7380), (2952, 7260), (2970, 7216), (3168, 6765), (3267, 6560), (3280, 6534), (3608, 5940), (3630, 5904), (3690, 5808), (3872, 5535), (3936, 5445), (3960, 5412), (4059, 5280), (4320, 4961), (4356, 4920), (4428, 4840), (4510, 4752)]