18397687

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:172

約数の個数: 36

約数和(自身を含む): 24562440

約数和(自身を除く): 6164753

約数列:

[1, 7, 11, 29, 49, 77, 107, 121, 203, 319, 539, 749, 847, 1177, 1421, 2233, 3103, 3509, 5243, 5929, 8239, 12947, 15631, 21721, 24563, 34133, 57673, 90629, 152047, 171941, 238931, 375463, 634403, 1672517, 2628241, 18397687]

約数ペア:

[(1, 18397687), (7, 2628241), (11, 1672517), (29, 634403), (49, 375463), (77, 238931), (107, 171941), (121, 152047), (203, 90629), (319, 57673), (539, 34133), (749, 24563), (847, 21721), (1177, 15631), (1421, 12947), (2233, 8239), (3103, 5929), (3509, 5243)]