20989155

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127207}}^1$

素因数の和:127226

約数の個数: 16

約数和(自身を含む): 36635904

約数和(自身を除く): 15646749

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127207, 381621, 636035, 1399277, 1908105, 4197831, 6996385, 20989155]

約数ペア:

[(1, 20989155), (3, 6996385), (5, 4197831), (11, 1908105), (15, 1399277), (33, 636035), (55, 381621), (165, 127207)]