1311125

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{617}}^1$

素因数の和:649

約数の個数: 16

約数和(自身を含む): 1735344

約数和(自身を除く): 424219

約数列:

[1, 5, 17, 25, 85, 125, 425, 617, 2125, 3085, 10489, 15425, 52445, 77125, 262225, 1311125]

約数ペア:

[(1, 1311125), (5, 262225), (17, 77125), (25, 52445), (85, 15425), (125, 10489), (425, 3085), (617, 2125)]