21331968

素因数分解:

$2^{15}\times 3^1\times 7^1\times {\mathrm{31}}^1$

素因数の和:71

約数の個数: 128

約数和(自身を含む): 67107840

約数和(自身を除く): 45775872

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 31, 32, 42, 48, 56, 62, 64, 84, 93, 96, 112, 124, 128, 168, 186, 192, 217, 224, 248, 256, 336, 372, 384, 434, 448, 496, 512, 651, 672, 744, 768, 868, 896, 992, 1024, 1302, 1344, 1488, 1536, 1736, 1792, 1984, 2048, 2604, 2688, 2976, 3072, 3472, 3584, 3968, 4096, 5208, 5376, 5952, 6144, 6944, 7168, 7936, 8192, 10416, 10752, 11904, 12288, 13888, 14336, 15872, 16384, 20832, 21504, 23808, 24576, 27776, 28672, 31744, 32768, 41664, 43008, 47616, 49152, 55552, 57344, 63488, 83328, 86016, 95232, 98304, 111104, 114688, 126976, 166656, 172032, 190464, 222208, 229376, 253952, 333312, 344064, 380928, 444416, 507904, 666624, 688128, 761856, 888832, 1015808, 1333248, 1523712, 1777664, 2666496, 3047424, 3555328, 5332992, 7110656, 10665984, 21331968]

約数ペア:

[(1, 21331968), (2, 10665984), (3, 7110656), (4, 5332992), (6, 3555328), (7, 3047424), (8, 2666496), (12, 1777664), (14, 1523712), (16, 1333248), (21, 1015808), (24, 888832), (28, 761856), (31, 688128), (32, 666624), (42, 507904), (48, 444416), (56, 380928), (62, 344064), (64, 333312), (84, 253952), (93, 229376), (96, 222208), (112, 190464), (124, 172032), (128, 166656), (168, 126976), (186, 114688), (192, 111104), (217, 98304), (224, 95232), (248, 86016), (256, 83328), (336, 63488), (372, 57344), (384, 55552), (434, 49152), (448, 47616), (496, 43008), (512, 41664), (651, 32768), (672, 31744), (744, 28672), (768, 27776), (868, 24576), (896, 23808), (992, 21504), (1024, 20832), (1302, 16384), (1344, 15872), (1488, 14336), (1536, 13888), (1736, 12288), (1792, 11904), (1984, 10752), (2048, 10416), (2604, 8192), (2688, 7936), (2976, 7168), (3072, 6944), (3472, 6144), (3584, 5952), (3968, 5376), (4096, 5208)]