21356760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:98

約数の個数: 192

約数和(自身を含む): 74066400

約数和(自身を除く): 52709640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 20, 24, 29, 30, 34, 38, 40, 51, 57, 58, 60, 68, 76, 85, 87, 95, 102, 114, 116, 120, 136, 145, 152, 170, 174, 190, 204, 228, 232, 255, 285, 290, 323, 340, 348, 361, 380, 408, 435, 456, 493, 510, 551, 570, 580, 646, 680, 696, 722, 760, 870, 969, 986, 1020, 1083, 1102, 1140, 1160, 1292, 1444, 1479, 1615, 1653, 1740, 1805, 1938, 1972, 2040, 2166, 2204, 2280, 2465, 2584, 2755, 2888, 2958, 3230, 3306, 3480, 3610, 3876, 3944, 4332, 4408, 4845, 4930, 5415, 5510, 5916, 6137, 6460, 6612, 7220, 7395, 7752, 8265, 8664, 9367, 9690, 9860, 10469, 10830, 11020, 11832, 12274, 12920, 13224, 14440, 14790, 16530, 18411, 18734, 19380, 19720, 20938, 21660, 22040, 24548, 28101, 29580, 30685, 31407, 33060, 36822, 37468, 38760, 41876, 43320, 46835, 49096, 52345, 56202, 59160, 61370, 62814, 66120, 73644, 74936, 83752, 92055, 93670, 104690, 112404, 122740, 125628, 140505, 147288, 157035, 177973, 184110, 187340, 209380, 224808, 245480, 251256, 281010, 314070, 355946, 368220, 374680, 418760, 533919, 562020, 628140, 711892, 736440, 889865, 1067838, 1124040, 1256280, 1423784, 1779730, 2135676, 2669595, 3559460, 4271352, 5339190, 7118920, 10678380, 21356760]

約数ペア:

[(1, 21356760), (2, 10678380), (3, 7118920), (4, 5339190), (5, 4271352), (6, 3559460), (8, 2669595), (10, 2135676), (12, 1779730), (15, 1423784), (17, 1256280), (19, 1124040), (20, 1067838), (24, 889865), (29, 736440), (30, 711892), (34, 628140), (38, 562020), (40, 533919), (51, 418760), (57, 374680), (58, 368220), (60, 355946), (68, 314070), (76, 281010), (85, 251256), (87, 245480), (95, 224808), (102, 209380), (114, 187340), (116, 184110), (120, 177973), (136, 157035), (145, 147288), (152, 140505), (170, 125628), (174, 122740), (190, 112404), (204, 104690), (228, 93670), (232, 92055), (255, 83752), (285, 74936), (290, 73644), (323, 66120), (340, 62814), (348, 61370), (361, 59160), (380, 56202), (408, 52345), (435, 49096), (456, 46835), (493, 43320), (510, 41876), (551, 38760), (570, 37468), (580, 36822), (646, 33060), (680, 31407), (696, 30685), (722, 29580), (760, 28101), (870, 24548), (969, 22040), (986, 21660), (1020, 20938), (1083, 19720), (1102, 19380), (1140, 18734), (1160, 18411), (1292, 16530), (1444, 14790), (1479, 14440), (1615, 13224), (1653, 12920), (1740, 12274), (1805, 11832), (1938, 11020), (1972, 10830), (2040, 10469), (2166, 9860), (2204, 9690), (2280, 9367), (2465, 8664), (2584, 8265), (2755, 7752), (2888, 7395), (2958, 7220), (3230, 6612), (3306, 6460), (3480, 6137), (3610, 5916), (3876, 5510), (3944, 5415), (4332, 4930), (4408, 4845)]