20990211

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{17191}}^1$

素因数の和:17242

約数の個数: 16

約数和(自身を含む): 31358208

約数和(自身を除く): 10367997

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 17191, 51573, 189101, 567303, 636067, 1908201, 6996737, 20990211]

約数ペア:

[(1, 20990211), (3, 6996737), (11, 1908201), (33, 636067), (37, 567303), (111, 189101), (407, 51573), (1221, 17191)]