19721856

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:87

約数の個数: 256

約数和(自身を含む): 70502400

約数和(自身を除く): 50780544

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 23, 24, 28, 29, 32, 33, 42, 44, 46, 48, 56, 58, 64, 66, 69, 77, 84, 87, 88, 92, 96, 112, 116, 128, 132, 138, 154, 161, 168, 174, 176, 184, 192, 203, 224, 231, 232, 253, 264, 276, 308, 319, 322, 336, 348, 352, 368, 384, 406, 448, 462, 464, 483, 506, 528, 552, 609, 616, 638, 644, 667, 672, 696, 704, 736, 759, 812, 896, 924, 928, 957, 966, 1012, 1056, 1104, 1218, 1232, 1276, 1288, 1334, 1344, 1392, 1408, 1472, 1518, 1624, 1771, 1848, 1856, 1914, 1932, 2001, 2024, 2112, 2208, 2233, 2436, 2464, 2552, 2576, 2668, 2688, 2784, 2944, 3036, 3248, 3542, 3696, 3712, 3828, 3864, 4002, 4048, 4224, 4416, 4466, 4669, 4872, 4928, 5104, 5152, 5313, 5336, 5568, 6072, 6496, 6699, 7084, 7337, 7392, 7656, 7728, 8004, 8096, 8832, 8932, 9338, 9744, 9856, 10208, 10304, 10626, 10672, 11136, 12144, 12992, 13398, 14007, 14168, 14674, 14784, 15312, 15456, 16008, 16192, 17864, 18676, 19488, 20416, 20608, 21252, 21344, 22011, 24288, 25984, 26796, 28014, 28336, 29348, 29568, 30624, 30912, 32016, 32384, 35728, 37352, 38976, 40832, 42504, 42688, 44022, 48576, 51359, 53592, 56028, 56672, 58696, 61248, 61824, 64032, 71456, 74704, 77952, 85008, 85376, 88044, 97152, 102718, 107184, 112056, 113344, 117392, 122496, 128064, 142912, 149408, 154077, 170016, 176088, 205436, 214368, 224112, 226688, 234784, 256128, 285824, 298816, 308154, 340032, 352176, 410872, 428736, 448224, 469568, 597632, 616308, 680064, 704352, 821744, 857472, 896448, 939136, 1232616, 1408704, 1643488, 1792896, 2465232, 2817408, 3286976, 4930464, 6573952, 9860928, 19721856]

約数ペア:

[(1, 19721856), (2, 9860928), (3, 6573952), (4, 4930464), (6, 3286976), (7, 2817408), (8, 2465232), (11, 1792896), (12, 1643488), (14, 1408704), (16, 1232616), (21, 939136), (22, 896448), (23, 857472), (24, 821744), (28, 704352), (29, 680064), (32, 616308), (33, 597632), (42, 469568), (44, 448224), (46, 428736), (48, 410872), (56, 352176), (58, 340032), (64, 308154), (66, 298816), (69, 285824), (77, 256128), (84, 234784), (87, 226688), (88, 224112), (92, 214368), (96, 205436), (112, 176088), (116, 170016), (128, 154077), (132, 149408), (138, 142912), (154, 128064), (161, 122496), (168, 117392), (174, 113344), (176, 112056), (184, 107184), (192, 102718), (203, 97152), (224, 88044), (231, 85376), (232, 85008), (253, 77952), (264, 74704), (276, 71456), (308, 64032), (319, 61824), (322, 61248), (336, 58696), (348, 56672), (352, 56028), (368, 53592), (384, 51359), (406, 48576), (448, 44022), (462, 42688), (464, 42504), (483, 40832), (506, 38976), (528, 37352), (552, 35728), (609, 32384), (616, 32016), (638, 30912), (644, 30624), (667, 29568), (672, 29348), (696, 28336), (704, 28014), (736, 26796), (759, 25984), (812, 24288), (896, 22011), (924, 21344), (928, 21252), (957, 20608), (966, 20416), (1012, 19488), (1056, 18676), (1104, 17864), (1218, 16192), (1232, 16008), (1276, 15456), (1288, 15312), (1334, 14784), (1344, 14674), (1392, 14168), (1408, 14007), (1472, 13398), (1518, 12992), (1624, 12144), (1771, 11136), (1848, 10672), (1856, 10626), (1914, 10304), (1932, 10208), (2001, 9856), (2024, 9744), (2112, 9338), (2208, 8932), (2233, 8832), (2436, 8096), (2464, 8004), (2552, 7728), (2576, 7656), (2668, 7392), (2688, 7337), (2784, 7084), (2944, 6699), (3036, 6496), (3248, 6072), (3542, 5568), (3696, 5336), (3712, 5313), (3828, 5152), (3864, 5104), (4002, 4928), (4048, 4872), (4224, 4669), (4416, 4466)]