20658915

素因数分解:

$3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1117}}^1$

素因数の和:1268

約数の個数: 32

約数和(自身を含む): 37028160

約数和(自身を除く): 16369245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 137, 411, 685, 1117, 1233, 2055, 3351, 3699, 5585, 6165, 10053, 16755, 18495, 30159, 50265, 150795, 153029, 459087, 765145, 1377261, 2295435, 4131783, 6886305, 20658915]

約数ペア:

[(1, 20658915), (3, 6886305), (5, 4131783), (9, 2295435), (15, 1377261), (27, 765145), (45, 459087), (135, 153029), (137, 150795), (411, 50265), (685, 30159), (1117, 18495), (1233, 16755), (2055, 10053), (3351, 6165), (3699, 5585)]