20780055

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2833}}^1$

素因数の和:3007

約数の個数: 24

約数和(自身を含む): 36252528

約数和(自身を除く): 15472473

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2833, 7335, 8499, 14165, 25497, 42495, 127485, 461779, 1385337, 2308895, 4156011, 6926685, 20780055]

約数ペア:

[(1, 20780055), (3, 6926685), (5, 4156011), (9, 2308895), (15, 1385337), (45, 461779), (163, 127485), (489, 42495), (815, 25497), (1467, 14165), (2445, 8499), (2833, 7335)]