21081513

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{1171}}^1$

素因数の和:1544

約数の個数: 16

約数和(自身を含む): 29871936

約数和(自身を除く): 8790423

約数列:

[1, 3, 17, 51, 353, 1059, 1171, 3513, 6001, 18003, 19907, 59721, 413363, 1240089, 7027171, 21081513]

約数ペア:

[(1, 21081513), (3, 7027171), (17, 1240089), (51, 413363), (353, 59721), (1059, 19907), (1171, 18003), (3513, 6001)]