21081856

素因数分解:

$2^8\times {\mathrm{82351}}^1$

素因数の和:82367

約数の個数: 18

約数和(自身を含む): 42081872

約数和(自身を除く): 21000016

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 82351, 164702, 329404, 658808, 1317616, 2635232, 5270464, 10540928, 21081856]

約数ペア:

[(1, 21081856), (2, 10540928), (4, 5270464), (8, 2635232), (16, 1317616), (32, 658808), (64, 329404), (128, 164702), (256, 82351)]