21215913

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{16183}}^1$

素因数の和:16228

約数の個数: 16

約数和(自身を含む): 31073280

約数和(自身を除く): 9857367

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 16183, 48549, 307477, 372209, 922431, 1116627, 7071971, 21215913]

約数ペア:

[(1, 21215913), (3, 7071971), (19, 1116627), (23, 922431), (57, 372209), (69, 307477), (437, 48549), (1311, 16183)]