21090691772

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{122620301}}^1$

素因数の和:122620348

約数の個数: 12

約数和(自身を含む): 37767053016

約数和(自身を除く): 16676361244

約数列:

[1, 2, 4, 43, 86, 172, 122620301, 245240602, 490481204, 5272672943, 10545345886, 21090691772]

約数ペア:

[(1, 21090691772), (2, 10545345886), (4, 5272672943), (43, 490481204), (86, 245240602), (172, 122620301)]