21088473

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{3499}}^1$

素因数の和:3557

約数の個数: 24

約数和(自身を含む): 33516000

約数和(自身を除く): 12427527

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 3499, 6027, 10497, 24493, 73479, 143459, 171451, 430377, 514353, 1004213, 3012639, 7029491, 21088473]

約数ペア:

[(1, 21088473), (3, 7029491), (7, 3012639), (21, 1004213), (41, 514353), (49, 430377), (123, 171451), (147, 143459), (287, 73479), (861, 24493), (2009, 10497), (3499, 6027)]