21643874

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67217}}^1$

素因数の和:67249

約数の個数: 16

約数和(自身を含む): 38717568

約数和(自身を除く): 17073694

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 67217, 134434, 470519, 941038, 1545991, 3091982, 10821937, 21643874]

約数ペア:

[(1, 21643874), (2, 10821937), (7, 3091982), (14, 1545991), (23, 941038), (46, 470519), (161, 134434), (322, 67217)]