20158483975

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{12809}}^1$

素因数の和:12889

約数の個数: 72

約数和(自身を含む): 31622663520

約数和(自身を除く): 11464179545

約数列:

[1, 5, 7, 17, 23, 25, 35, 85, 115, 119, 161, 175, 391, 425, 529, 575, 595, 805, 1955, 2645, 2737, 2975, 3703, 4025, 8993, 9775, 12809, 13225, 13685, 18515, 44965, 62951, 64045, 68425, 89663, 92575, 217753, 224825, 294607, 314755, 320225, 448315, 1088765, 1473035, 1524271, 1573775, 2062249, 2241575, 5008319, 5443825, 6775961, 7365175, 7621355, 10311245, 25041595, 33879805, 35058233, 38106775, 47431727, 51556225, 115191337, 125207975, 169399025, 175291165, 237158635, 575956685, 806339359, 876455825, 1185793175, 2879783425, 4031696795, 20158483975]

約数ペア:

[(1, 20158483975), (5, 4031696795), (7, 2879783425), (17, 1185793175), (23, 876455825), (25, 806339359), (35, 575956685), (85, 237158635), (115, 175291165), (119, 169399025), (161, 125207975), (175, 115191337), (391, 51556225), (425, 47431727), (529, 38106775), (575, 35058233), (595, 33879805), (805, 25041595), (1955, 10311245), (2645, 7621355), (2737, 7365175), (2975, 6775961), (3703, 5443825), (4025, 5008319), (8993, 2241575), (9775, 2062249), (12809, 1573775), (13225, 1524271), (13685, 1473035), (18515, 1088765), (44965, 448315), (62951, 320225), (64045, 314755), (68425, 294607), (89663, 224825), (92575, 217753)]