20914894

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 43610112

約数和(自身を除く): 22695218

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 31, 62, 77, 91, 143, 154, 182, 217, 286, 337, 341, 403, 434, 674, 682, 806, 1001, 2002, 2359, 2387, 2821, 3707, 4381, 4433, 4718, 4774, 5642, 7414, 8762, 8866, 10447, 20894, 25949, 30667, 31031, 48191, 51898, 61334, 62062, 73129, 96382, 114917, 135811, 146258, 229834, 271622, 337337, 674674, 804419, 950677, 1493921, 1608838, 1901354, 2987842, 10457447, 20914894]

約数ペア:

[(1, 20914894), (2, 10457447), (7, 2987842), (11, 1901354), (13, 1608838), (14, 1493921), (22, 950677), (26, 804419), (31, 674674), (62, 337337), (77, 271622), (91, 229834), (143, 146258), (154, 135811), (182, 114917), (217, 96382), (286, 73129), (337, 62062), (341, 61334), (403, 51898), (434, 48191), (674, 31031), (682, 30667), (806, 25949), (1001, 20894), (2002, 10447), (2359, 8866), (2387, 8762), (2821, 7414), (3707, 5642), (4381, 4774), (4433, 4718)]