21749973

素因数分解:

$3^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{919}}^1$

素因数の和:966

約数の個数: 32

約数和(自身を含む): 35328000

約数和(自身を除く): 13578027

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 343, 483, 919, 1029, 1127, 2757, 3381, 6433, 7889, 19299, 21137, 23667, 45031, 63411, 135093, 147959, 315217, 443877, 945651, 1035713, 3107139, 7249991, 21749973]

約数ペア:

[(1, 21749973), (3, 7249991), (7, 3107139), (21, 1035713), (23, 945651), (49, 443877), (69, 315217), (147, 147959), (161, 135093), (343, 63411), (483, 45031), (919, 23667), (1029, 21137), (1127, 19299), (2757, 7889), (3381, 6433)]