20217508528

素因数分解:

$2^4\times 7^1\times {\mathrm{263}}^1\times {\mathrm{686363}}^1$

素因数の和:686641

約数の個数: 40

約数和(自身を含む): 44937623808

約数和(自身を除く): 24720115280

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 263, 526, 1052, 1841, 2104, 3682, 4208, 7364, 14728, 29456, 686363, 1372726, 2745452, 4804541, 5490904, 9609082, 10981808, 19218164, 38436328, 76872656, 180513469, 361026938, 722053876, 1263594283, 1444107752, 2527188566, 2888215504, 5054377132, 10108754264, 20217508528]

約数ペア:

[(1, 20217508528), (2, 10108754264), (4, 5054377132), (7, 2888215504), (8, 2527188566), (14, 1444107752), (16, 1263594283), (28, 722053876), (56, 361026938), (112, 180513469), (263, 76872656), (526, 38436328), (1052, 19218164), (1841, 10981808), (2104, 9609082), (3682, 5490904), (4208, 4804541), (7364, 2745452), (14728, 1372726), (29456, 686363)]