25525521

素因数分解:

$3^2\times 7^2\times {\mathrm{57881}}^1$

素因数の和:57901

約数の個数: 18

約数和(自身を含む): 42890562

約数和(自身を除く): 17365041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 57881, 173643, 405167, 520929, 1215501, 2836169, 3646503, 8508507, 25525521]

約数ペア:

[(1, 25525521), (3, 8508507), (7, 3646503), (9, 2836169), (21, 1215501), (49, 520929), (63, 405167), (147, 173643), (441, 57881)]