20663091

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{499}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 30888000

約数和(自身を除く): 10224909

約数列:

[1, 3, 9, 43, 107, 129, 321, 387, 499, 963, 1497, 4491, 4601, 13803, 21457, 41409, 53393, 64371, 160179, 193113, 480537, 2295899, 6887697, 20663091]

約数ペア:

[(1, 20663091), (3, 6887697), (9, 2295899), (43, 480537), (107, 193113), (129, 160179), (321, 64371), (387, 53393), (499, 41409), (963, 21457), (1497, 13803), (4491, 4601)]