20745728

素因数分解:

$2^9\times {\mathrm{40519}}^1$

素因数の和:40537

約数の個数: 20

約数和(自身を含む): 41451960

約数和(自身を除く): 20706232

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 40519, 81038, 162076, 324152, 648304, 1296608, 2593216, 5186432, 10372864, 20745728]

約数ペア:

[(1, 20745728), (2, 10372864), (4, 5186432), (8, 2593216), (16, 1296608), (32, 648304), (64, 324152), (128, 162076), (256, 81038), (512, 40519)]