209129511

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{20521}}^1$

素因数の和:20646

約数の個数: 16

約数和(自身を含む): 288949760

約数和(自身を除く): 79820249

約数列:

[1, 3, 43, 79, 129, 237, 3397, 10191, 20521, 61563, 882403, 1621159, 2647209, 4863477, 69709837, 209129511]

約数ペア:

[(1, 209129511), (3, 69709837), (43, 4863477), (79, 2647209), (129, 1621159), (237, 882403), (3397, 61563), (10191, 20521)]