21489874

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80789}}^1$

素因数の和:80817

約数の個数: 16

約数和(自身を含む): 38779200

約数和(自身を除く): 17289326

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80789, 161578, 565523, 1131046, 1534991, 3069982, 10744937, 21489874]

約数ペア:

[(1, 21489874), (2, 10744937), (7, 3069982), (14, 1534991), (19, 1131046), (38, 565523), (133, 161578), (266, 80789)]