281640681

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{27767}}^1$

素因数の和:27810

約数の個数: 36

約数和(自身を含む): 493826112

約数和(自身を除く): 212185431

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 3381, 10143, 27767, 83301, 194369, 249903, 583107, 638641, 1360583, 1749321, 1915923, 4081749, 4470487, 5747769, 12245247, 13411461, 31293409, 40234383, 93880227, 281640681]

約数ペア:

[(1, 281640681), (3, 93880227), (7, 40234383), (9, 31293409), (21, 13411461), (23, 12245247), (49, 5747769), (63, 4470487), (69, 4081749), (147, 1915923), (161, 1749321), (207, 1360583), (441, 638641), (483, 583107), (1127, 249903), (1449, 194369), (3381, 83301), (10143, 27767)]