20211961

素因数分解:

$7^3\times {\mathrm{11}}^2\times {\mathrm{487}}^1$

素因数の和:530

約数の個数: 24

約数和(自身を含む): 25961600

約数和(自身を除く): 5749639

約数列:

[1, 7, 11, 49, 77, 121, 343, 487, 539, 847, 3409, 3773, 5357, 5929, 23863, 37499, 41503, 58927, 167041, 262493, 412489, 1837451, 2887423, 20211961]

約数ペア:

[(1, 20211961), (7, 2887423), (11, 1837451), (49, 412489), (77, 262493), (121, 167041), (343, 58927), (487, 41503), (539, 37499), (847, 23863), (3409, 5929), (3773, 5357)]