21505536

素因数分解:

$2^9\times 3^2\times {\mathrm{13}}^1\times {\mathrm{359}}^1$

素因数の和:396

約数の個数: 120

約数和(自身を含む): 67026960

約数和(自身を除く): 45521424

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 64, 72, 78, 96, 104, 117, 128, 144, 156, 192, 208, 234, 256, 288, 312, 359, 384, 416, 468, 512, 576, 624, 718, 768, 832, 936, 1077, 1152, 1248, 1436, 1536, 1664, 1872, 2154, 2304, 2496, 2872, 3231, 3328, 3744, 4308, 4608, 4667, 4992, 5744, 6462, 6656, 7488, 8616, 9334, 9984, 11488, 12924, 14001, 14976, 17232, 18668, 19968, 22976, 25848, 28002, 29952, 34464, 37336, 42003, 45952, 51696, 56004, 59904, 68928, 74672, 84006, 91904, 103392, 112008, 137856, 149344, 168012, 183808, 206784, 224016, 275712, 298688, 336024, 413568, 448032, 551424, 597376, 672048, 827136, 896064, 1194752, 1344096, 1654272, 1792128, 2389504, 2688192, 3584256, 5376384, 7168512, 10752768, 21505536]

約数ペア:

[(1, 21505536), (2, 10752768), (3, 7168512), (4, 5376384), (6, 3584256), (8, 2688192), (9, 2389504), (12, 1792128), (13, 1654272), (16, 1344096), (18, 1194752), (24, 896064), (26, 827136), (32, 672048), (36, 597376), (39, 551424), (48, 448032), (52, 413568), (64, 336024), (72, 298688), (78, 275712), (96, 224016), (104, 206784), (117, 183808), (128, 168012), (144, 149344), (156, 137856), (192, 112008), (208, 103392), (234, 91904), (256, 84006), (288, 74672), (312, 68928), (359, 59904), (384, 56004), (416, 51696), (468, 45952), (512, 42003), (576, 37336), (624, 34464), (718, 29952), (768, 28002), (832, 25848), (936, 22976), (1077, 19968), (1152, 18668), (1248, 17232), (1436, 14976), (1536, 14001), (1664, 12924), (1872, 11488), (2154, 9984), (2304, 9334), (2496, 8616), (2872, 7488), (3231, 6656), (3328, 6462), (3744, 5744), (4308, 4992), (4608, 4667)]