3138989

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{47}}^2$

素因数の和:137

約数の個数: 18

約数和(自身を含む): 3859470

約数和(自身を除く): 720481

約数列:

[1, 7, 29, 47, 49, 203, 329, 1363, 1421, 2209, 2303, 9541, 15463, 64061, 66787, 108241, 448427, 3138989]

約数ペア:

[(1, 3138989), (7, 448427), (29, 108241), (47, 66787), (49, 64061), (203, 15463), (329, 9541), (1363, 2303), (1421, 2209)]