20791808

素因数分解:

$2^9\times {\mathrm{40609}}^1$

素因数の和:40627

約数の個数: 20

約数和(自身を含む): 41544030

約数和(自身を除く): 20752222

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 40609, 81218, 162436, 324872, 649744, 1299488, 2598976, 5197952, 10395904, 20791808]

約数ペア:

[(1, 20791808), (2, 10395904), (4, 5197952), (8, 2598976), (16, 1299488), (32, 649744), (64, 324872), (128, 162436), (256, 81218), (512, 40609)]