18305840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 49288512

約数和(自身を除く): 30982672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 97, 112, 140, 194, 280, 337, 388, 485, 560, 674, 679, 776, 970, 1348, 1358, 1552, 1685, 1940, 2359, 2696, 2716, 3370, 3395, 3880, 4718, 5392, 5432, 6740, 6790, 7760, 9436, 10864, 11795, 13480, 13580, 18872, 23590, 26960, 27160, 32689, 37744, 47180, 54320, 65378, 94360, 130756, 163445, 188720, 228823, 261512, 326890, 457646, 523024, 653780, 915292, 1144115, 1307560, 1830584, 2288230, 2615120, 3661168, 4576460, 9152920, 18305840]

約数ペア:

[(1, 18305840), (2, 9152920), (4, 4576460), (5, 3661168), (7, 2615120), (8, 2288230), (10, 1830584), (14, 1307560), (16, 1144115), (20, 915292), (28, 653780), (35, 523024), (40, 457646), (56, 326890), (70, 261512), (80, 228823), (97, 188720), (112, 163445), (140, 130756), (194, 94360), (280, 65378), (337, 54320), (388, 47180), (485, 37744), (560, 32689), (674, 27160), (679, 26960), (776, 23590), (970, 18872), (1348, 13580), (1358, 13480), (1552, 11795), (1685, 10864), (1940, 9436), (2359, 7760), (2696, 6790), (2716, 6740), (3370, 5432), (3395, 5392), (3880, 4718)]