21054012225

素因数分解:

$3^1\times 5^2\times {\mathrm{280720163}}^1$

素因数の和:280720176

約数の個数: 12

約数和(自身を含む): 34809300336

約数和(自身を除く): 13755288111

約数列:

[1, 3, 5, 15, 25, 75, 280720163, 842160489, 1403600815, 4210802445, 7018004075, 21054012225]

約数ペア:

[(1, 21054012225), (3, 7018004075), (5, 4210802445), (15, 1403600815), (25, 842160489), (75, 280720163)]