28712013

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{21221}}^1$

素因数の和:21276

約数の個数: 16

約数和(自身を含む): 42783552

約数和(自身を除く): 14071539

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 21221, 63663, 233431, 700293, 870061, 2610183, 9570671, 28712013]

約数ペア:

[(1, 28712013), (3, 9570671), (11, 2610183), (33, 870061), (41, 700293), (123, 233431), (451, 63663), (1353, 21221)]