21565984

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 25136672

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 197, 311, 352, 394, 622, 788, 1244, 1576, 2167, 2488, 3152, 3421, 4334, 4976, 6304, 6842, 8668, 9952, 13684, 17336, 27368, 34672, 54736, 61267, 69344, 109472, 122534, 245068, 490136, 673937, 980272, 1347874, 1960544, 2695748, 5391496, 10782992, 21565984]

約数ペア:

[(1, 21565984), (2, 10782992), (4, 5391496), (8, 2695748), (11, 1960544), (16, 1347874), (22, 980272), (32, 673937), (44, 490136), (88, 245068), (176, 122534), (197, 109472), (311, 69344), (352, 61267), (394, 54736), (622, 34672), (788, 27368), (1244, 17336), (1576, 13684), (2167, 9952), (2488, 8668), (3152, 6842), (3421, 6304), (4334, 4976)]