16820565

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{65963}}^1$

素因数の和:65988

約数の個数: 16

約数和(自身を含む): 28496448

約数和(自身を除く): 11675883

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 65963, 197889, 329815, 989445, 1121371, 3364113, 5606855, 16820565]

約数ペア:

[(1, 16820565), (3, 5606855), (5, 3364113), (15, 1121371), (17, 989445), (51, 329815), (85, 197889), (255, 65963)]