19940151

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2333}}^1$

素因数の和:2391

約数の個数: 32

約数和(自身を含む): 34057728

約数和(自身を除く): 14117577

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2333, 2849, 6999, 8547, 16331, 25663, 48993, 76989, 86321, 179641, 258963, 538923, 604247, 949531, 1812741, 2848593, 6646717, 19940151]

約数ペア:

[(1, 19940151), (3, 6646717), (7, 2848593), (11, 1812741), (21, 949531), (33, 604247), (37, 538923), (77, 258963), (111, 179641), (231, 86321), (259, 76989), (407, 48993), (777, 25663), (1221, 16331), (2333, 8547), (2849, 6999)]