128323225

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{17761}}^1$

素因数の和:17805

約数の個数: 18

約数和(自身を含む): 169040954

約数和(自身を除く): 40717729

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 17761, 88805, 301937, 444025, 1509685, 5132929, 7548425, 25664645, 128323225]

約数ペア:

[(1, 128323225), (5, 25664645), (17, 7548425), (25, 5132929), (85, 1509685), (289, 444025), (425, 301937), (1445, 88805), (7225, 17761)]