21140042

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137273}}^1$

素因数の和:137293

約数の個数: 16

約数和(自身を含む): 39534912

約数和(自身を除く): 18394870

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 137273, 274546, 960911, 1510003, 1921822, 3020006, 10570021, 21140042]

約数ペア:

[(1, 21140042), (2, 10570021), (7, 3020006), (11, 1921822), (14, 1510003), (22, 960911), (77, 274546), (154, 137273)]