890242525

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{400109}}^1$

素因数の和:400208

約数の個数: 12

約数和(自身を含む): 1116306900

約数和(自身を除く): 226064375

約数列:

[1, 5, 25, 89, 445, 2225, 400109, 2000545, 10002725, 35609701, 178048505, 890242525]

約数ペア:

[(1, 890242525), (5, 178048505), (25, 35609701), (89, 10002725), (445, 2000545), (2225, 400109)]