21283920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:170

約数の個数: 240

約数和(自身を含む): 84494592

約数和(自身を除く): 63210672

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 41, 42, 45, 48, 56, 60, 63, 70, 72, 80, 82, 84, 90, 103, 105, 112, 120, 123, 126, 140, 144, 164, 168, 180, 205, 206, 210, 240, 246, 252, 280, 287, 309, 315, 328, 336, 360, 369, 410, 412, 420, 492, 504, 515, 560, 574, 615, 618, 630, 656, 720, 721, 738, 820, 824, 840, 861, 927, 984, 1008, 1030, 1148, 1230, 1236, 1260, 1435, 1442, 1476, 1545, 1640, 1648, 1680, 1722, 1845, 1854, 1968, 2060, 2163, 2296, 2460, 2472, 2520, 2583, 2870, 2884, 2952, 3090, 3280, 3444, 3605, 3690, 3708, 4120, 4223, 4305, 4326, 4592, 4635, 4920, 4944, 5040, 5166, 5740, 5768, 5904, 6180, 6489, 6888, 7210, 7380, 7416, 8240, 8446, 8610, 8652, 9270, 9840, 10332, 10815, 11480, 11536, 12360, 12669, 12915, 12978, 13776, 14420, 14760, 14832, 16892, 17220, 17304, 18540, 20664, 21115, 21630, 22960, 24720, 25338, 25830, 25956, 28840, 29520, 29561, 32445, 33784, 34440, 34608, 37080, 38007, 41328, 42230, 43260, 50676, 51660, 51912, 57680, 59122, 63345, 64890, 67568, 68880, 74160, 76014, 84460, 86520, 88683, 101352, 103320, 103824, 118244, 126690, 129780, 147805, 152028, 168920, 173040, 177366, 190035, 202704, 206640, 236488, 253380, 259560, 266049, 295610, 304056, 337840, 354732, 380070, 443415, 472976, 506760, 519120, 532098, 591220, 608112, 709464, 760140, 886830, 1013520, 1064196, 1182440, 1330245, 1418928, 1520280, 1773660, 2128392, 2364880, 2660490, 3040560, 3547320, 4256784, 5320980, 7094640, 10641960, 21283920]

約数ペア:

[(1, 21283920), (2, 10641960), (3, 7094640), (4, 5320980), (5, 4256784), (6, 3547320), (7, 3040560), (8, 2660490), (9, 2364880), (10, 2128392), (12, 1773660), (14, 1520280), (15, 1418928), (16, 1330245), (18, 1182440), (20, 1064196), (21, 1013520), (24, 886830), (28, 760140), (30, 709464), (35, 608112), (36, 591220), (40, 532098), (41, 519120), (42, 506760), (45, 472976), (48, 443415), (56, 380070), (60, 354732), (63, 337840), (70, 304056), (72, 295610), (80, 266049), (82, 259560), (84, 253380), (90, 236488), (103, 206640), (105, 202704), (112, 190035), (120, 177366), (123, 173040), (126, 168920), (140, 152028), (144, 147805), (164, 129780), (168, 126690), (180, 118244), (205, 103824), (206, 103320), (210, 101352), (240, 88683), (246, 86520), (252, 84460), (280, 76014), (287, 74160), (309, 68880), (315, 67568), (328, 64890), (336, 63345), (360, 59122), (369, 57680), (410, 51912), (412, 51660), (420, 50676), (492, 43260), (504, 42230), (515, 41328), (560, 38007), (574, 37080), (615, 34608), (618, 34440), (630, 33784), (656, 32445), (720, 29561), (721, 29520), (738, 28840), (820, 25956), (824, 25830), (840, 25338), (861, 24720), (927, 22960), (984, 21630), (1008, 21115), (1030, 20664), (1148, 18540), (1230, 17304), (1236, 17220), (1260, 16892), (1435, 14832), (1442, 14760), (1476, 14420), (1545, 13776), (1640, 12978), (1648, 12915), (1680, 12669), (1722, 12360), (1845, 11536), (1854, 11480), (1968, 10815), (2060, 10332), (2163, 9840), (2296, 9270), (2460, 8652), (2472, 8610), (2520, 8446), (2583, 8240), (2870, 7416), (2884, 7380), (2952, 7210), (3090, 6888), (3280, 6489), (3444, 6180), (3605, 5904), (3690, 5768), (3708, 5740), (4120, 5166), (4223, 5040), (4305, 4944), (4326, 4920), (4592, 4635)]