21026628

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:223

約数の個数: 120

約数和(自身を含む): 64182272

約数和(自身を除く): 43155644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 73, 81, 84, 108, 126, 127, 146, 162, 189, 219, 252, 254, 292, 324, 378, 381, 438, 508, 511, 567, 657, 756, 762, 876, 889, 1022, 1134, 1143, 1314, 1524, 1533, 1778, 1971, 2044, 2268, 2286, 2628, 2667, 3066, 3429, 3556, 3942, 4572, 4599, 5334, 5913, 6132, 6858, 7884, 8001, 9198, 9271, 10287, 10668, 11826, 13716, 13797, 16002, 18396, 18542, 20574, 23652, 24003, 27594, 27813, 32004, 37084, 41148, 41391, 48006, 55188, 55626, 64897, 72009, 82782, 83439, 96012, 111252, 129794, 144018, 165564, 166878, 194691, 250317, 259588, 288036, 333756, 389382, 500634, 584073, 750951, 778764, 1001268, 1168146, 1501902, 1752219, 2336292, 3003804, 3504438, 5256657, 7008876, 10513314, 21026628]

約数ペア:

[(1, 21026628), (2, 10513314), (3, 7008876), (4, 5256657), (6, 3504438), (7, 3003804), (9, 2336292), (12, 1752219), (14, 1501902), (18, 1168146), (21, 1001268), (27, 778764), (28, 750951), (36, 584073), (42, 500634), (54, 389382), (63, 333756), (73, 288036), (81, 259588), (84, 250317), (108, 194691), (126, 166878), (127, 165564), (146, 144018), (162, 129794), (189, 111252), (219, 96012), (252, 83439), (254, 82782), (292, 72009), (324, 64897), (378, 55626), (381, 55188), (438, 48006), (508, 41391), (511, 41148), (567, 37084), (657, 32004), (756, 27813), (762, 27594), (876, 24003), (889, 23652), (1022, 20574), (1134, 18542), (1143, 18396), (1314, 16002), (1524, 13797), (1533, 13716), (1778, 11826), (1971, 10668), (2044, 10287), (2268, 9271), (2286, 9198), (2628, 8001), (2667, 7884), (3066, 6858), (3429, 6132), (3556, 5913), (3942, 5334), (4572, 4599)]