20736639

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1301}}^1$

素因数の和:1348

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 18260865

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1301, 1449, 1771, 2277, 3903, 5313, 9107, 11709, 14311, 15939, 27321, 29923, 42933, 81963, 89769, 100177, 128799, 209461, 269307, 300531, 329153, 628383, 901593, 987459, 1885149, 2304071, 2962377, 6912213, 20736639]

約数ペア:

[(1, 20736639), (3, 6912213), (7, 2962377), (9, 2304071), (11, 1885149), (21, 987459), (23, 901593), (33, 628383), (63, 329153), (69, 300531), (77, 269307), (99, 209461), (161, 128799), (207, 100177), (231, 89769), (253, 81963), (483, 42933), (693, 29923), (759, 27321), (1301, 15939), (1449, 14311), (1771, 11709), (2277, 9107), (3903, 5313)]