19609857

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 32078592

約数和(自身を除く): 12468735

約数列:

[1, 3, 9, 17, 27, 47, 51, 81, 101, 141, 153, 243, 303, 423, 459, 799, 909, 1269, 1377, 1717, 2397, 2727, 3807, 4131, 4747, 5151, 7191, 8181, 11421, 14241, 15453, 21573, 24543, 42723, 46359, 64719, 80699, 128169, 139077, 194157, 242097, 384507, 417231, 726291, 1153521, 2178873, 6536619, 19609857]

約数ペア:

[(1, 19609857), (3, 6536619), (9, 2178873), (17, 1153521), (27, 726291), (47, 417231), (51, 384507), (81, 242097), (101, 194157), (141, 139077), (153, 128169), (243, 80699), (303, 64719), (423, 46359), (459, 42723), (799, 24543), (909, 21573), (1269, 15453), (1377, 14241), (1717, 11421), (2397, 8181), (2727, 7191), (3807, 5151), (4131, 4747)]