18251013879

素因数分解:

$3^5\times 7^3\times {\mathrm{218971}}^1$

素因数の和:219007

約数の個数: 48

約数和(自身を含む): 31882323200

約数和(自身を除く): 13631309321

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 343, 441, 567, 1029, 1323, 1701, 3087, 3969, 9261, 11907, 27783, 83349, 218971, 656913, 1532797, 1970739, 4598391, 5912217, 10729579, 13795173, 17736651, 32188737, 41385519, 53209953, 75107053, 96566211, 124156557, 225321159, 289698633, 372469671, 675963477, 869095899, 2027890431, 2607287697, 6083671293, 18251013879]

約数ペア:

[(1, 18251013879), (3, 6083671293), (7, 2607287697), (9, 2027890431), (21, 869095899), (27, 675963477), (49, 372469671), (63, 289698633), (81, 225321159), (147, 124156557), (189, 96566211), (243, 75107053), (343, 53209953), (441, 41385519), (567, 32188737), (1029, 17736651), (1323, 13795173), (1701, 10729579), (3087, 5912217), (3969, 4598391), (9261, 1970739), (11907, 1532797), (27783, 656913), (83349, 218971)]