18886736

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{449}}^1$

素因数の和:707

約数の個数: 40

約数和(自身を含む): 40176000

約数和(自身を除く): 21289264

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 239, 449, 478, 898, 956, 1796, 1912, 2629, 3592, 3824, 4939, 5258, 7184, 9878, 10516, 19756, 21032, 39512, 42064, 79024, 107311, 214622, 429244, 858488, 1180421, 1716976, 2360842, 4721684, 9443368, 18886736]

約数ペア:

[(1, 18886736), (2, 9443368), (4, 4721684), (8, 2360842), (11, 1716976), (16, 1180421), (22, 858488), (44, 429244), (88, 214622), (176, 107311), (239, 79024), (449, 42064), (478, 39512), (898, 21032), (956, 19756), (1796, 10516), (1912, 9878), (2629, 7184), (3592, 5258), (3824, 4939)]