18423559

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 24768000

約数和(自身を除く): 6344441

約数列:

[1, 7, 11, 19, 49, 77, 133, 209, 257, 343, 539, 931, 1463, 1799, 2827, 3773, 4883, 6517, 10241, 12593, 19789, 34181, 53713, 71687, 88151, 138523, 239267, 375991, 969661, 1674869, 2631937, 18423559]

約数ペア:

[(1, 18423559), (7, 2631937), (11, 1674869), (19, 969661), (49, 375991), (77, 239267), (133, 138523), (209, 88151), (257, 71687), (343, 53713), (539, 34181), (931, 19789), (1463, 12593), (1799, 10241), (2827, 6517), (3773, 4883)]