28257280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{5519}}^1$

素因数の和:5544

約数の個数: 44

約数和(自身を含む): 67796640

約数和(自身を除く): 39539360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 5519, 11038, 22076, 27595, 44152, 55190, 88304, 110380, 176608, 220760, 353216, 441520, 706432, 883040, 1412864, 1766080, 2825728, 3532160, 5651456, 7064320, 14128640, 28257280]

約数ペア:

[(1, 28257280), (2, 14128640), (4, 7064320), (5, 5651456), (8, 3532160), (10, 2825728), (16, 1766080), (20, 1412864), (32, 883040), (40, 706432), (64, 441520), (80, 353216), (128, 220760), (160, 176608), (256, 110380), (320, 88304), (512, 55190), (640, 44152), (1024, 27595), (1280, 22076), (2560, 11038), (5120, 5519)]