28011325

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{3877}}^1$

素因数の和:3921

約数の個数: 18

約数和(自身を含む): 36906926

約数和(自身を除く): 8895601

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 3877, 7225, 19385, 65909, 96925, 329545, 1120453, 1647725, 5602265, 28011325]

約数ペア:

[(1, 28011325), (5, 5602265), (17, 1647725), (25, 1120453), (85, 329545), (289, 96925), (425, 65909), (1445, 19385), (3877, 7225)]