815409

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^2$

素因数の和:106

約数の個数: 27

約数和(自身を含む): 1402713

約数和(自身を除く): 587304

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1849, 2107, 2709, 5547, 6321, 12943, 16641, 18963, 38829, 90601, 116487, 271803, 815409]

約数ペア:

[(1, 815409), (3, 271803), (7, 116487), (9, 90601), (21, 38829), (43, 18963), (49, 16641), (63, 12943), (129, 6321), (147, 5547), (301, 2709), (387, 2107), (441, 1849)]