18865686

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 44928000

約数和(自身を除く): 26062314

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 89, 98, 103, 147, 178, 206, 267, 294, 309, 343, 534, 618, 623, 686, 721, 1029, 1246, 1442, 1869, 2058, 2163, 3738, 4326, 4361, 5047, 8722, 9167, 10094, 13083, 15141, 18334, 26166, 27501, 30282, 30527, 35329, 55002, 61054, 64169, 70658, 91581, 105987, 128338, 183162, 192507, 211974, 385014, 449183, 898366, 1347549, 2695098, 3144281, 6288562, 9432843, 18865686]

約数ペア:

[(1, 18865686), (2, 9432843), (3, 6288562), (6, 3144281), (7, 2695098), (14, 1347549), (21, 898366), (42, 449183), (49, 385014), (89, 211974), (98, 192507), (103, 183162), (147, 128338), (178, 105987), (206, 91581), (267, 70658), (294, 64169), (309, 61054), (343, 55002), (534, 35329), (618, 30527), (623, 30282), (686, 27501), (721, 26166), (1029, 18334), (1246, 15141), (1442, 13083), (1869, 10094), (2058, 9167), (2163, 8722), (3738, 5047), (4326, 4361)]