21048320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4111}}^1$

素因数の和:4136

約数の個数: 44

約数和(自身を含む): 50503584

約数和(自身を除く): 29455264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4111, 5120, 8222, 16444, 20555, 32888, 41110, 65776, 82220, 131552, 164440, 263104, 328880, 526208, 657760, 1052416, 1315520, 2104832, 2631040, 4209664, 5262080, 10524160, 21048320]

約数ペア:

[(1, 21048320), (2, 10524160), (4, 5262080), (5, 4209664), (8, 2631040), (10, 2104832), (16, 1315520), (20, 1052416), (32, 657760), (40, 526208), (64, 328880), (80, 263104), (128, 164440), (160, 131552), (256, 82220), (320, 65776), (512, 41110), (640, 32888), (1024, 20555), (1280, 16444), (2560, 8222), (4111, 5120)]