21053055

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82561}}^1$

素因数の和:82586

約数の個数: 16

約数和(自身を含む): 35666784

約数和(自身を除く): 14613729

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82561, 247683, 412805, 1238415, 1403537, 4210611, 7017685, 21053055]

約数ペア:

[(1, 21053055), (3, 7017685), (5, 4210611), (15, 1403537), (17, 1238415), (51, 412805), (85, 247683), (255, 82561)]