20409856

素因数分解:

$2^9\times {\mathrm{39863}}^1$

素因数の和:39881

約数の個数: 20

約数和(自身を含む): 40780872

約数和(自身を除く): 20371016

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 39863, 79726, 159452, 318904, 637808, 1275616, 2551232, 5102464, 10204928, 20409856]

約数ペア:

[(1, 20409856), (2, 10204928), (4, 5102464), (8, 2551232), (16, 1275616), (32, 637808), (64, 318904), (128, 159452), (256, 79726), (512, 39863)]