20685808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9041}}^1$

素因数の和:9073

約数の個数: 40

約数和(自身を含む): 47090736

約数和(自身を除く): 26404928

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 9041, 18082, 36164, 72328, 99451, 117533, 144656, 198902, 235066, 397804, 470132, 795608, 940264, 1292863, 1591216, 1880528, 2585726, 5171452, 10342904, 20685808]

約数ペア:

[(1, 20685808), (2, 10342904), (4, 5171452), (8, 2585726), (11, 1880528), (13, 1591216), (16, 1292863), (22, 940264), (26, 795608), (44, 470132), (52, 397804), (88, 235066), (104, 198902), (143, 144656), (176, 117533), (208, 99451), (286, 72328), (572, 36164), (1144, 18082), (2288, 9041)]