20665278

素因数分解:

$2^1\times 3^2\times {\mathrm{73}}^1\times {\mathrm{15727}}^1$

素因数の和:15808

約数の個数: 24

約数和(自身を含む): 45391008

約数和(自身を除く): 24725730

約数列:

[1, 2, 3, 6, 9, 18, 73, 146, 219, 438, 657, 1314, 15727, 31454, 47181, 94362, 141543, 283086, 1148071, 2296142, 3444213, 6888426, 10332639, 20665278]

約数ペア:

[(1, 20665278), (2, 10332639), (3, 6888426), (6, 3444213), (9, 2296142), (18, 1148071), (73, 283086), (146, 141543), (219, 94362), (438, 47181), (657, 31454), (1314, 15727)]