21798007

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2161}}^1$

素因数の和:2310

約数の個数: 16

約数和(自身を含む): 27396864

約数和(自身を除く): 5598857

約数列:

[1, 7, 11, 77, 131, 917, 1441, 2161, 10087, 15127, 23771, 166397, 283091, 1981637, 3114001, 21798007]

約数ペア:

[(1, 21798007), (7, 3114001), (11, 1981637), (77, 283091), (131, 166397), (917, 23771), (1441, 15127), (2161, 10087)]