20857606

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 42799104

約数和(自身を除く): 21941498

約数列:

[1, 2, 7, 11, 14, 17, 22, 31, 34, 62, 77, 119, 154, 187, 217, 238, 257, 341, 374, 434, 514, 527, 682, 1054, 1309, 1799, 2387, 2618, 2827, 3598, 3689, 4369, 4774, 5654, 5797, 7378, 7967, 8738, 11594, 15934, 19789, 30583, 39578, 40579, 48059, 55769, 61166, 81158, 87637, 96118, 111538, 135439, 175274, 270878, 336413, 613459, 672826, 948073, 1226918, 1489829, 1896146, 2979658, 10428803, 20857606]

約数ペア:

[(1, 20857606), (2, 10428803), (7, 2979658), (11, 1896146), (14, 1489829), (17, 1226918), (22, 948073), (31, 672826), (34, 613459), (62, 336413), (77, 270878), (119, 175274), (154, 135439), (187, 111538), (217, 96118), (238, 87637), (257, 81158), (341, 61166), (374, 55769), (434, 48059), (514, 40579), (527, 39578), (682, 30583), (1054, 19789), (1309, 15934), (1799, 11594), (2387, 8738), (2618, 7967), (2827, 7378), (3598, 5797), (3689, 5654), (4369, 4774)]