21089013

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{4289}}^1$

素因数の和:4452

約数の個数: 16

約数和(自身を含む): 30888000

約数和(自身を除く): 9798987

約数列:

[1, 3, 11, 33, 149, 447, 1639, 4289, 4917, 12867, 47179, 141537, 639061, 1917183, 7029671, 21089013]

約数ペア:

[(1, 21089013), (3, 7029671), (11, 1917183), (33, 639061), (149, 141537), (447, 47179), (1639, 12867), (4289, 4917)]