20765120

素因数分解:

$2^6\times 5^1\times {\mathrm{64891}}^1$

素因数の和:64908

約数の個数: 28

約数和(自身を含む): 49447704

約数和(自身を除く): 28682584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64891, 129782, 259564, 324455, 519128, 648910, 1038256, 1297820, 2076512, 2595640, 4153024, 5191280, 10382560, 20765120]

約数ペア:

[(1, 20765120), (2, 10382560), (4, 5191280), (5, 4153024), (8, 2595640), (10, 2076512), (16, 1297820), (20, 1038256), (32, 648910), (40, 519128), (64, 324455), (80, 259564), (160, 129782), (320, 64891)]