28161861

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2399}}^1$

素因数の和:2465

約数の個数: 32

約数和(自身を含む): 47308800

約数和(自身を除く): 19146939

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 2399, 3913, 7197, 11739, 16793, 31187, 50379, 93561, 103157, 218309, 309471, 654927, 722099, 1341041, 2166297, 4023123, 9387287, 28161861]

約数ペア:

[(1, 28161861), (3, 9387287), (7, 4023123), (13, 2166297), (21, 1341041), (39, 722099), (43, 654927), (91, 309471), (129, 218309), (273, 103157), (301, 93561), (559, 50379), (903, 31187), (1677, 16793), (2399, 11739), (3913, 7197)]