21396804

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:405

約数の個数: 96

約数和(自身を含む): 60418176

約数和(自身を除く): 39021372

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 22, 26, 33, 37, 39, 44, 52, 66, 74, 78, 111, 132, 143, 148, 156, 222, 286, 337, 407, 429, 444, 481, 572, 674, 814, 858, 962, 1011, 1221, 1348, 1443, 1628, 1716, 1924, 2022, 2442, 2886, 3707, 4044, 4381, 4884, 5291, 5772, 7414, 8762, 10582, 11121, 12469, 13143, 14828, 15873, 17524, 21164, 22242, 24938, 26286, 31746, 37407, 44484, 48191, 49876, 52572, 63492, 74814, 96382, 137159, 144573, 149628, 162097, 192764, 274318, 289146, 324194, 411477, 486291, 548636, 578292, 648388, 822954, 972582, 1645908, 1783067, 1945164, 3566134, 5349201, 7132268, 10698402, 21396804]

約数ペア:

[(1, 21396804), (2, 10698402), (3, 7132268), (4, 5349201), (6, 3566134), (11, 1945164), (12, 1783067), (13, 1645908), (22, 972582), (26, 822954), (33, 648388), (37, 578292), (39, 548636), (44, 486291), (52, 411477), (66, 324194), (74, 289146), (78, 274318), (111, 192764), (132, 162097), (143, 149628), (148, 144573), (156, 137159), (222, 96382), (286, 74814), (337, 63492), (407, 52572), (429, 49876), (444, 48191), (481, 44484), (572, 37407), (674, 31746), (814, 26286), (858, 24938), (962, 22242), (1011, 21164), (1221, 17524), (1348, 15873), (1443, 14828), (1628, 13143), (1716, 12469), (1924, 11121), (2022, 10582), (2442, 8762), (2886, 7414), (3707, 5772), (4044, 5291), (4381, 4884)]