21757569

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 10797951

約数列:

[1, 3, 17, 29, 47, 51, 87, 141, 313, 493, 799, 939, 1363, 1479, 2397, 4089, 5321, 9077, 14711, 15963, 23171, 27231, 44133, 69513, 154309, 250087, 426619, 462927, 750261, 1279857, 7252523, 21757569]

約数ペア:

[(1, 21757569), (3, 7252523), (17, 1279857), (29, 750261), (47, 462927), (51, 426619), (87, 250087), (141, 154309), (313, 69513), (493, 44133), (799, 27231), (939, 23171), (1363, 15963), (1479, 14711), (2397, 9077), (4089, 5321)]