20121992275

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{17747}}^1$

素因数の和:17825

約数の個数: 96

約数和(自身を含む): 33803550720

約数和(自身を除く): 13681558445

約数列:

[1, 5, 7, 11, 19, 25, 31, 35, 55, 77, 95, 133, 155, 175, 209, 217, 275, 341, 385, 475, 589, 665, 775, 1045, 1085, 1463, 1705, 1925, 2387, 2945, 3325, 4123, 5225, 5425, 6479, 7315, 8525, 11935, 14725, 17747, 20615, 32395, 36575, 45353, 59675, 88735, 103075, 124229, 161975, 195217, 226765, 337193, 443675, 550157, 621145, 976085, 1133825, 1366519, 1685965, 2360351, 2750785, 3105725, 3709123, 3851099, 4880425, 6051727, 6832595, 8429825, 10452983, 11801755, 13753925, 18545615, 19255495, 25963861, 30258635, 34162975, 42362089, 52264915, 59008775, 73170881, 92728075, 96277475, 114982813, 129819305, 151293175, 211810445, 261324575, 365854405, 574914065, 649096525, 804879691, 1059052225, 1829272025, 2874570325, 4024398455, 20121992275]

約数ペア:

[(1, 20121992275), (5, 4024398455), (7, 2874570325), (11, 1829272025), (19, 1059052225), (25, 804879691), (31, 649096525), (35, 574914065), (55, 365854405), (77, 261324575), (95, 211810445), (133, 151293175), (155, 129819305), (175, 114982813), (209, 96277475), (217, 92728075), (275, 73170881), (341, 59008775), (385, 52264915), (475, 42362089), (589, 34162975), (665, 30258635), (775, 25963861), (1045, 19255495), (1085, 18545615), (1463, 13753925), (1705, 11801755), (1925, 10452983), (2387, 8429825), (2945, 6832595), (3325, 6051727), (4123, 4880425), (5225, 3851099), (5425, 3709123), (6479, 3105725), (7315, 2750785), (8525, 2360351), (11935, 1685965), (14725, 1366519), (17747, 1133825), (20615, 976085), (32395, 621145), (36575, 550157), (45353, 443675), (59675, 337193), (88735, 226765), (103075, 195217), (124229, 161975)]