21909651

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{1217}}^1$

素因数の和:1590

約数の個数: 16

約数和(自身を含む): 31044384

約数和(自身を除く): 9134733

約数列:

[1, 3, 17, 51, 353, 1059, 1217, 3651, 6001, 18003, 20689, 62067, 429601, 1288803, 7303217, 21909651]

約数ペア:

[(1, 21909651), (3, 7303217), (17, 1288803), (51, 429601), (353, 62067), (1059, 20689), (1217, 18003), (3651, 6001)]