20911576

素因数分解:

$2^3\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1453}}^1$

素因数の和:1723

約数の個数: 32

約数和(自身を含む): 45015840

約数和(自身を除く): 24104264

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 257, 514, 1028, 1453, 1799, 2056, 2906, 3598, 5812, 7196, 10171, 11624, 14392, 20342, 40684, 81368, 373421, 746842, 1493684, 2613947, 2987368, 5227894, 10455788, 20911576]

約数ペア:

[(1, 20911576), (2, 10455788), (4, 5227894), (7, 2987368), (8, 2613947), (14, 1493684), (28, 746842), (56, 373421), (257, 81368), (514, 40684), (1028, 20342), (1453, 14392), (1799, 11624), (2056, 10171), (2906, 7196), (3598, 5812)]