28431025

素因数分解:

$5^2\times 7^2\times {\mathrm{23209}}^1$

素因数の和:23233

約数の個数: 18

約数和(自身を含む): 41012070

約数和(自身を除く): 12581045

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 23209, 116045, 162463, 580225, 812315, 1137241, 4061575, 5686205, 28431025]

約数ペア:

[(1, 28431025), (5, 5686205), (7, 4061575), (25, 1137241), (35, 812315), (49, 580225), (175, 162463), (245, 116045), (1225, 23209)]