19818141

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1291}}^1$

素因数の和:1361

約数の個数: 32

約数和(自身を含む): 32744448

約数和(自身を除く): 12926307

約数列:

[1, 3, 7, 17, 21, 43, 51, 119, 129, 301, 357, 731, 903, 1291, 2193, 3873, 5117, 9037, 15351, 21947, 27111, 55513, 65841, 153629, 166539, 388591, 460887, 943721, 1165773, 2831163, 6606047, 19818141]

約数ペア:

[(1, 19818141), (3, 6606047), (7, 2831163), (17, 1165773), (21, 943721), (43, 460887), (51, 388591), (119, 166539), (129, 153629), (301, 65841), (357, 55513), (731, 27111), (903, 21947), (1291, 15351), (2193, 9037), (3873, 5117)]