21016072

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:446

約数の個数: 64

約数和(自身を含む): 49737600

約数和(自身を除く): 28721528

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 109, 154, 218, 308, 313, 436, 616, 626, 763, 872, 1199, 1252, 1526, 2191, 2398, 2504, 3052, 3443, 4382, 4796, 6104, 6886, 8393, 8764, 9592, 13772, 16786, 17528, 24101, 27544, 33572, 34117, 48202, 67144, 68234, 96404, 136468, 192808, 238819, 272936, 375287, 477638, 750574, 955276, 1501148, 1910552, 2627009, 3002296, 5254018, 10508036, 21016072]

約数ペア:

[(1, 21016072), (2, 10508036), (4, 5254018), (7, 3002296), (8, 2627009), (11, 1910552), (14, 1501148), (22, 955276), (28, 750574), (44, 477638), (56, 375287), (77, 272936), (88, 238819), (109, 192808), (154, 136468), (218, 96404), (308, 68234), (313, 67144), (436, 48202), (616, 34117), (626, 33572), (763, 27544), (872, 24101), (1199, 17528), (1252, 16786), (1526, 13772), (2191, 9592), (2398, 8764), (2504, 8393), (3052, 6886), (3443, 6104), (4382, 4796)]