20201899487

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{109913}}^1$

素因数の和:109980

約数の個数: 36

約数和(自身を含む): 26664257088

約数和(自身を除く): 6462357601

約数列:

[1, 7, 11, 31, 49, 77, 121, 217, 341, 539, 847, 1519, 2387, 3751, 5929, 16709, 26257, 109913, 183799, 769391, 1209043, 3407303, 5385737, 8463301, 13299473, 23851121, 37480333, 59243107, 93096311, 166957847, 262362331, 412283663, 651674177, 1836536317, 2885985641, 20201899487]

約数ペア:

[(1, 20201899487), (7, 2885985641), (11, 1836536317), (31, 651674177), (49, 412283663), (77, 262362331), (121, 166957847), (217, 93096311), (341, 59243107), (539, 37480333), (847, 23851121), (1519, 13299473), (2387, 8463301), (3751, 5385737), (5929, 3407303), (16709, 1209043), (26257, 769391), (109913, 183799)]