21696768

素因数分解:

$2^8\times 3^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 144

約数和(自身を含む): 66552640

約数和(自身を除く): 44855872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 43, 48, 54, 64, 72, 73, 86, 96, 108, 128, 129, 144, 146, 172, 192, 216, 219, 256, 258, 288, 292, 344, 384, 387, 432, 438, 516, 576, 584, 657, 688, 768, 774, 864, 876, 1032, 1152, 1161, 1168, 1314, 1376, 1548, 1728, 1752, 1971, 2064, 2304, 2322, 2336, 2628, 2752, 3096, 3139, 3456, 3504, 3942, 4128, 4644, 4672, 5256, 5504, 6192, 6278, 6912, 7008, 7884, 8256, 9288, 9344, 9417, 10512, 11008, 12384, 12556, 14016, 15768, 16512, 18576, 18688, 18834, 21024, 24768, 25112, 28032, 28251, 31536, 33024, 37152, 37668, 42048, 49536, 50224, 56064, 56502, 63072, 74304, 75336, 84096, 84753, 99072, 100448, 113004, 126144, 148608, 150672, 168192, 169506, 200896, 226008, 252288, 297216, 301344, 339012, 401792, 452016, 504576, 602688, 678024, 803584, 904032, 1205376, 1356048, 1808064, 2410752, 2712096, 3616128, 5424192, 7232256, 10848384, 21696768]

約数ペア:

[(1, 21696768), (2, 10848384), (3, 7232256), (4, 5424192), (6, 3616128), (8, 2712096), (9, 2410752), (12, 1808064), (16, 1356048), (18, 1205376), (24, 904032), (27, 803584), (32, 678024), (36, 602688), (43, 504576), (48, 452016), (54, 401792), (64, 339012), (72, 301344), (73, 297216), (86, 252288), (96, 226008), (108, 200896), (128, 169506), (129, 168192), (144, 150672), (146, 148608), (172, 126144), (192, 113004), (216, 100448), (219, 99072), (256, 84753), (258, 84096), (288, 75336), (292, 74304), (344, 63072), (384, 56502), (387, 56064), (432, 50224), (438, 49536), (516, 42048), (576, 37668), (584, 37152), (657, 33024), (688, 31536), (768, 28251), (774, 28032), (864, 25112), (876, 24768), (1032, 21024), (1152, 18834), (1161, 18688), (1168, 18576), (1314, 16512), (1376, 15768), (1548, 14016), (1728, 12556), (1752, 12384), (1971, 11008), (2064, 10512), (2304, 9417), (2322, 9344), (2336, 9288), (2628, 8256), (2752, 7884), (3096, 7008), (3139, 6912), (3456, 6278), (3504, 6192), (3942, 5504), (4128, 5256), (4644, 4672)]