20686864

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{117539}}^1$

素因数の和:117558

約数の個数: 20

約数和(自身を含む): 43724880

約数和(自身を除く): 23038016

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 117539, 235078, 470156, 940312, 1292929, 1880624, 2585858, 5171716, 10343432, 20686864]

約数ペア:

[(1, 20686864), (2, 10343432), (4, 5171716), (8, 2585858), (11, 1880624), (16, 1292929), (22, 940312), (44, 470156), (88, 235078), (176, 117539)]