21738542

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67511}}^1$

素因数の和:67543

約数の個数: 16

約数和(自身を含む): 38886912

約数和(自身を除く): 17148370

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 67511, 135022, 472577, 945154, 1552753, 3105506, 10869271, 21738542]

約数ペア:

[(1, 21738542), (2, 10869271), (7, 3105506), (14, 1552753), (23, 945154), (46, 472577), (161, 135022), (322, 67511)]