21057729

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91159}}^1$

素因数の和:91180

約数の個数: 16

約数和(自身を含む): 35005440

約数和(自身を除く): 13947711

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91159, 273477, 638113, 1002749, 1914339, 3008247, 7019243, 21057729]

約数ペア:

[(1, 21057729), (3, 7019243), (7, 3008247), (11, 1914339), (21, 1002749), (33, 638113), (77, 273477), (231, 91159)]