21897436

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^2$

素因数の和:306

約数の個数: 36

約数和(自身を含む): 43578360

約数和(自身を除く): 21680924

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 116, 131, 262, 319, 524, 638, 1276, 1441, 2882, 3799, 5764, 7598, 15196, 17161, 34322, 41789, 68644, 83578, 167156, 188771, 377542, 497669, 755084, 995338, 1990676, 5474359, 10948718, 21897436]

約数ペア:

[(1, 21897436), (2, 10948718), (4, 5474359), (11, 1990676), (22, 995338), (29, 755084), (44, 497669), (58, 377542), (116, 188771), (131, 167156), (262, 83578), (319, 68644), (524, 41789), (638, 34322), (1276, 17161), (1441, 15196), (2882, 7598), (3799, 5764)]