21065091

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{21739}}^1$

素因数の和:21778

約数の個数: 16

約数和(自身を含む): 31305600

約数和(自身を除く): 10240509

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 21739, 65217, 369563, 413041, 1108689, 1239123, 7021697, 21065091]

約数ペア:

[(1, 21065091), (3, 7021697), (17, 1239123), (19, 1108689), (51, 413041), (57, 369563), (323, 65217), (969, 21739)]