289909827

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{3517}}^1$

素因数の和:3640

約数の個数: 32

約数和(自身を含む): 445800960

約数和(自身を除く): 155891133

約数列:

[1, 3, 9, 27, 43, 71, 129, 213, 387, 639, 1161, 1917, 3053, 3517, 9159, 10551, 27477, 31653, 82431, 94959, 151231, 249707, 453693, 749121, 1361079, 2247363, 4083237, 6742089, 10737401, 32212203, 96636609, 289909827]

約数ペア:

[(1, 289909827), (3, 96636609), (9, 32212203), (27, 10737401), (43, 6742089), (71, 4083237), (129, 2247363), (213, 1361079), (387, 749121), (639, 453693), (1161, 249707), (1917, 151231), (3053, 94959), (3517, 82431), (9159, 31653), (10551, 27477)]