18935824

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1619}}^1$

素因数の和:1687

約数の個数: 40

約数和(自身を含む): 39774240

約数和(自身を除く): 20838416

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 136, 172, 272, 344, 688, 731, 1462, 1619, 2924, 3238, 5848, 6476, 11696, 12952, 25904, 27523, 55046, 69617, 110092, 139234, 220184, 278468, 440368, 556936, 1113872, 1183489, 2366978, 4733956, 9467912, 18935824]

約数ペア:

[(1, 18935824), (2, 9467912), (4, 4733956), (8, 2366978), (16, 1183489), (17, 1113872), (34, 556936), (43, 440368), (68, 278468), (86, 220184), (136, 139234), (172, 110092), (272, 69617), (344, 55046), (688, 27523), (731, 25904), (1462, 12952), (1619, 11696), (2924, 6476), (3238, 5848)]