20728254

素因数分解:

$2^1\times 3^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:584

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 21728706

約数列:

[1, 2, 3, 6, 83, 107, 166, 214, 249, 321, 389, 498, 642, 778, 1167, 2334, 8881, 17762, 26643, 32287, 41623, 53286, 64574, 83246, 96861, 124869, 193722, 249738, 3454709, 6909418, 10364127, 20728254]

約数ペア:

[(1, 20728254), (2, 10364127), (3, 6909418), (6, 3454709), (83, 249738), (107, 193722), (166, 124869), (214, 96861), (249, 83246), (321, 64574), (389, 53286), (498, 41623), (642, 32287), (778, 26643), (1167, 17762), (2334, 8881)]