217660905

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20939}}^1$

素因数の和:20971

約数の個数: 64

約数和(自身を含む): 482457600

約数和(自身を除く): 264796695

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 99, 105, 135, 165, 189, 231, 297, 315, 385, 495, 693, 945, 1155, 1485, 2079, 3465, 10395, 20939, 62817, 104695, 146573, 188451, 230329, 314085, 439719, 565353, 690987, 732865, 942255, 1151645, 1319157, 1612303, 2072961, 2198595, 2826765, 3454935, 3957471, 4836909, 6218883, 6595785, 8061515, 10364805, 14510727, 19787355, 24184545, 31094415, 43532181, 72553635, 217660905]

約数ペア:

[(1, 217660905), (3, 72553635), (5, 43532181), (7, 31094415), (9, 24184545), (11, 19787355), (15, 14510727), (21, 10364805), (27, 8061515), (33, 6595785), (35, 6218883), (45, 4836909), (55, 3957471), (63, 3454935), (77, 2826765), (99, 2198595), (105, 2072961), (135, 1612303), (165, 1319157), (189, 1151645), (231, 942255), (297, 732865), (315, 690987), (385, 565353), (495, 439719), (693, 314085), (945, 230329), (1155, 188451), (1485, 146573), (2079, 104695), (3465, 62817), (10395, 20939)]