21257599

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 26818560

約数和(自身を除く): 5560961

約数列:

[1, 11, 17, 19, 31, 187, 193, 209, 323, 341, 527, 589, 2123, 3281, 3553, 3667, 5797, 5983, 6479, 10013, 36091, 40337, 62339, 65813, 101711, 110143, 113677, 685729, 1118821, 1250447, 1932509, 21257599]

約数ペア:

[(1, 21257599), (11, 1932509), (17, 1250447), (19, 1118821), (31, 685729), (187, 113677), (193, 110143), (209, 101711), (323, 65813), (341, 62339), (527, 40337), (589, 36091), (2123, 10013), (3281, 6479), (3553, 5983), (3667, 5797)]