21024640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2$

素因数の和:77

約数の個数: 192

約数和(自身を含む): 65288160

約数和(自身を除く): 44263520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 32, 35, 38, 40, 52, 56, 64, 65, 70, 76, 80, 91, 95, 104, 112, 128, 130, 133, 140, 152, 160, 182, 190, 208, 224, 247, 260, 266, 280, 304, 320, 361, 364, 380, 416, 448, 455, 494, 520, 532, 560, 608, 640, 665, 722, 728, 760, 832, 896, 910, 988, 1040, 1064, 1120, 1216, 1235, 1330, 1444, 1456, 1520, 1664, 1729, 1805, 1820, 1976, 2080, 2128, 2240, 2432, 2470, 2527, 2660, 2888, 2912, 3040, 3458, 3610, 3640, 3952, 4160, 4256, 4480, 4693, 4940, 5054, 5320, 5776, 5824, 6080, 6916, 7220, 7280, 7904, 8320, 8512, 8645, 9386, 9880, 10108, 10640, 11552, 11648, 12160, 12635, 13832, 14440, 14560, 15808, 17024, 17290, 18772, 19760, 20216, 21280, 23104, 23465, 25270, 27664, 28880, 29120, 31616, 32851, 34580, 37544, 39520, 40432, 42560, 46208, 46930, 50540, 55328, 57760, 58240, 65702, 69160, 75088, 79040, 80864, 85120, 93860, 101080, 110656, 115520, 131404, 138320, 150176, 158080, 161728, 164255, 187720, 202160, 221312, 231040, 262808, 276640, 300352, 323456, 328510, 375440, 404320, 525616, 553280, 600704, 657020, 750880, 808640, 1051232, 1106560, 1314040, 1501760, 1617280, 2102464, 2628080, 3003520, 4204928, 5256160, 10512320, 21024640]

約数ペア:

[(1, 21024640), (2, 10512320), (4, 5256160), (5, 4204928), (7, 3003520), (8, 2628080), (10, 2102464), (13, 1617280), (14, 1501760), (16, 1314040), (19, 1106560), (20, 1051232), (26, 808640), (28, 750880), (32, 657020), (35, 600704), (38, 553280), (40, 525616), (52, 404320), (56, 375440), (64, 328510), (65, 323456), (70, 300352), (76, 276640), (80, 262808), (91, 231040), (95, 221312), (104, 202160), (112, 187720), (128, 164255), (130, 161728), (133, 158080), (140, 150176), (152, 138320), (160, 131404), (182, 115520), (190, 110656), (208, 101080), (224, 93860), (247, 85120), (260, 80864), (266, 79040), (280, 75088), (304, 69160), (320, 65702), (361, 58240), (364, 57760), (380, 55328), (416, 50540), (448, 46930), (455, 46208), (494, 42560), (520, 40432), (532, 39520), (560, 37544), (608, 34580), (640, 32851), (665, 31616), (722, 29120), (728, 28880), (760, 27664), (832, 25270), (896, 23465), (910, 23104), (988, 21280), (1040, 20216), (1064, 19760), (1120, 18772), (1216, 17290), (1235, 17024), (1330, 15808), (1444, 14560), (1456, 14440), (1520, 13832), (1664, 12635), (1729, 12160), (1805, 11648), (1820, 11552), (1976, 10640), (2080, 10108), (2128, 9880), (2240, 9386), (2432, 8645), (2470, 8512), (2527, 8320), (2660, 7904), (2888, 7280), (2912, 7220), (3040, 6916), (3458, 6080), (3610, 5824), (3640, 5776), (3952, 5320), (4160, 5054), (4256, 4940), (4480, 4693)]