40704640

素因数分解:

$2^7\times 5^1\times {\mathrm{63601}}^1$

素因数の和:63620

約数の個数: 32

約数和(自身を含む): 97311060

約数和(自身を除く): 56606420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 63601, 127202, 254404, 318005, 508808, 636010, 1017616, 1272020, 2035232, 2544040, 4070464, 5088080, 8140928, 10176160, 20352320, 40704640]

約数ペア:

[(1, 40704640), (2, 20352320), (4, 10176160), (5, 8140928), (8, 5088080), (10, 4070464), (16, 2544040), (20, 2035232), (32, 1272020), (40, 1017616), (64, 636010), (80, 508808), (128, 318005), (160, 254404), (320, 127202), (640, 63601)]