21729280

素因数分解:

$2^{12}\times 5^1\times {\mathrm{1061}}^1$

素因数の和:1090

約数の個数: 52

約数和(自身を含む): 52193052

約数和(自身を除く): 30463772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1061, 1280, 2048, 2122, 2560, 4096, 4244, 5120, 5305, 8488, 10240, 10610, 16976, 20480, 21220, 33952, 42440, 67904, 84880, 135808, 169760, 271616, 339520, 543232, 679040, 1086464, 1358080, 2172928, 2716160, 4345856, 5432320, 10864640, 21729280]

約数ペア:

[(1, 21729280), (2, 10864640), (4, 5432320), (5, 4345856), (8, 2716160), (10, 2172928), (16, 1358080), (20, 1086464), (32, 679040), (40, 543232), (64, 339520), (80, 271616), (128, 169760), (160, 135808), (256, 84880), (320, 67904), (512, 42440), (640, 33952), (1024, 21220), (1061, 20480), (1280, 16976), (2048, 10610), (2122, 10240), (2560, 8488), (4096, 5305), (4244, 5120)]