20497774

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6703}}^1$

素因数の和:6855

約数の個数: 16

約数和(自身を含む): 33788160

約数和(自身を除く): 13290386

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6703, 13406, 73733, 147466, 931717, 1863434, 10248887, 20497774]

約数ペア:

[(1, 20497774), (2, 10248887), (11, 1863434), (22, 931717), (139, 147466), (278, 73733), (1529, 13406), (3058, 6703)]