665984

素因数分解:

$2^7\times {\mathrm{11}}^2\times {\mathrm{43}}^1$

素因数の和:79

約数の個数: 48

約数和(自身を含む): 1492260

約数和(自身を除く): 826276

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 64, 86, 88, 121, 128, 172, 176, 242, 344, 352, 473, 484, 688, 704, 946, 968, 1376, 1408, 1892, 1936, 2752, 3784, 3872, 5203, 5504, 7568, 7744, 10406, 15136, 15488, 20812, 30272, 41624, 60544, 83248, 166496, 332992, 665984]

約数ペア:

[(1, 665984), (2, 332992), (4, 166496), (8, 83248), (11, 60544), (16, 41624), (22, 30272), (32, 20812), (43, 15488), (44, 15136), (64, 10406), (86, 7744), (88, 7568), (121, 5504), (128, 5203), (172, 3872), (176, 3784), (242, 2752), (344, 1936), (352, 1892), (473, 1408), (484, 1376), (688, 968), (704, 946)]