20375971

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{647}}^1$

素因数の和:1074

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 5129309

約数列:

[1, 7, 11, 77, 409, 647, 2863, 4499, 4529, 7117, 31493, 49819, 264623, 1852361, 2910853, 20375971]

約数ペア:

[(1, 20375971), (7, 2910853), (11, 1852361), (77, 264623), (409, 49819), (647, 31493), (2863, 7117), (4499, 4529)]