20728642

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{12907}}^1$

素因数の和:12993

約数の個数: 16

約数和(自身を含む): 34386912

約数和(自身を除く): 13658270

約数列:

[1, 2, 11, 22, 73, 146, 803, 1606, 12907, 25814, 141977, 283954, 942211, 1884422, 10364321, 20728642]

約数ペア:

[(1, 20728642), (2, 10364321), (11, 1884422), (22, 942211), (73, 283954), (146, 141977), (803, 25814), (1606, 12907)]