21257188

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{571}}^1$

素因数の和:843

約数の個数: 24

約数和(自身を含む): 38342304

約数和(自身を除く): 17085116

約数列:

[1, 2, 4, 41, 82, 164, 227, 454, 571, 908, 1142, 2284, 9307, 18614, 23411, 37228, 46822, 93644, 129617, 259234, 518468, 5314297, 10628594, 21257188]

約数ペア:

[(1, 21257188), (2, 10628594), (4, 5314297), (41, 518468), (82, 259234), (164, 129617), (227, 93644), (454, 46822), (571, 37228), (908, 23411), (1142, 18614), (2284, 9307)]