20792156

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:88

約数の個数: 108

約数和(自身を含む): 51078384

約数和(自身を除く): 30286228

約数列:

[1, 2, 4, 7, 11, 14, 17, 19, 22, 28, 34, 38, 44, 68, 76, 77, 119, 121, 133, 154, 187, 209, 238, 242, 266, 308, 323, 361, 374, 418, 476, 484, 532, 646, 722, 748, 836, 847, 1292, 1309, 1444, 1463, 1694, 2057, 2261, 2299, 2527, 2618, 2926, 3388, 3553, 3971, 4114, 4522, 4598, 5054, 5236, 5852, 6137, 7106, 7942, 8228, 9044, 9196, 10108, 12274, 14212, 14399, 15884, 16093, 24548, 24871, 27797, 28798, 32186, 39083, 42959, 43681, 49742, 55594, 57596, 64372, 67507, 78166, 85918, 87362, 99484, 111188, 135014, 156332, 171836, 174724, 270028, 273581, 305767, 472549, 547162, 611534, 742577, 945098, 1094324, 1223068, 1485154, 1890196, 2970308, 5198039, 10396078, 20792156]

約数ペア:

[(1, 20792156), (2, 10396078), (4, 5198039), (7, 2970308), (11, 1890196), (14, 1485154), (17, 1223068), (19, 1094324), (22, 945098), (28, 742577), (34, 611534), (38, 547162), (44, 472549), (68, 305767), (76, 273581), (77, 270028), (119, 174724), (121, 171836), (133, 156332), (154, 135014), (187, 111188), (209, 99484), (238, 87362), (242, 85918), (266, 78166), (308, 67507), (323, 64372), (361, 57596), (374, 55594), (418, 49742), (476, 43681), (484, 42959), (532, 39083), (646, 32186), (722, 28798), (748, 27797), (836, 24871), (847, 24548), (1292, 16093), (1309, 15884), (1444, 14399), (1463, 14212), (1694, 12274), (2057, 10108), (2261, 9196), (2299, 9044), (2527, 8228), (2618, 7942), (2926, 7106), (3388, 6137), (3553, 5852), (3971, 5236), (4114, 5054), (4522, 4598)]