81561325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4463}}^1$

素因数の和:4533

約数の個数: 24

約数和(自身を含む): 109600128

約数和(自身を除く): 28038803

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 3655, 4463, 18275, 22315, 75871, 111575, 191909, 379355, 959545, 1896775, 3262453, 4797725, 16312265, 81561325]

約数ペア:

[(1, 81561325), (5, 16312265), (17, 4797725), (25, 3262453), (43, 1896775), (85, 959545), (215, 379355), (425, 191909), (731, 111575), (1075, 75871), (3655, 22315), (4463, 18275)]