21155565

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82963}}^1$

素因数の和:82988

約数の個数: 16

約数和(自身を含む): 35840448

約数和(自身を除く): 14684883

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82963, 248889, 414815, 1244445, 1410371, 4231113, 7051855, 21155565]

約数ペア:

[(1, 21155565), (3, 7051855), (5, 4231113), (15, 1410371), (17, 1244445), (51, 414815), (85, 248889), (255, 82963)]