21193711

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 27929088

約数和(自身を除く): 6735377

約数列:

[1, 7, 11, 37, 43, 77, 173, 259, 301, 407, 473, 1211, 1591, 1903, 2849, 3311, 6401, 7439, 11137, 13321, 17501, 44807, 52073, 70411, 81829, 122507, 275243, 492877, 572803, 1926701, 3027673, 21193711]

約数ペア:

[(1, 21193711), (7, 3027673), (11, 1926701), (37, 572803), (43, 492877), (77, 275243), (173, 122507), (259, 81829), (301, 70411), (407, 52073), (473, 44807), (1211, 17501), (1591, 13321), (1903, 11137), (2849, 7439), (3311, 6401)]