206520921

素因数分解:

$3^4\times {\mathrm{827}}^1\times {\mathrm{3083}}^1$

素因数の和:3922

約数の個数: 20

約数和(自身を含む): 308979792

約数和(自身を除く): 102458871

約数列:

[1, 3, 9, 27, 81, 827, 2481, 3083, 7443, 9249, 22329, 27747, 66987, 83241, 249723, 2549641, 7648923, 22946769, 68840307, 206520921]

約数ペア:

[(1, 206520921), (3, 68840307), (9, 22946769), (27, 7648923), (81, 2549641), (827, 249723), (2481, 83241), (3083, 66987), (7443, 27747), (9249, 22329)]