21735791

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7294609

約数列:

[1, 7, 11, 19, 77, 83, 133, 179, 209, 581, 913, 1253, 1463, 1577, 1969, 3401, 6391, 11039, 13783, 14857, 17347, 23807, 37411, 103999, 121429, 163427, 261877, 282283, 1143989, 1975981, 3105113, 21735791]

約数ペア:

[(1, 21735791), (7, 3105113), (11, 1975981), (19, 1143989), (77, 282283), (83, 261877), (133, 163427), (179, 121429), (209, 103999), (581, 37411), (913, 23807), (1253, 17347), (1463, 14857), (1577, 13783), (1969, 11039), (3401, 6391)]