1281988136

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{977}}^1$

素因数の和:1075

約数の個数: 128

約数和(自身を含む): 2996904960

約数和(自身を除く): 1714916824

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 31, 37, 44, 52, 62, 74, 88, 104, 124, 143, 148, 248, 286, 296, 341, 403, 407, 481, 572, 682, 806, 814, 962, 977, 1144, 1147, 1364, 1612, 1628, 1924, 1954, 2294, 2728, 3224, 3256, 3848, 3908, 4433, 4588, 5291, 7816, 8866, 9176, 10582, 10747, 12617, 12701, 14911, 17732, 21164, 21494, 25234, 25402, 29822, 30287, 35464, 36149, 42328, 42988, 50468, 50804, 59644, 60574, 72298, 85976, 100936, 101608, 119288, 121148, 139711, 144596, 164021, 242296, 279422, 289192, 328042, 333157, 393731, 397639, 469937, 558844, 656084, 666314, 787462, 795278, 939874, 1117688, 1120619, 1312168, 1332628, 1574924, 1590556, 1879748, 2241238, 2665256, 3149848, 3181112, 3759496, 4331041, 4482476, 5169307, 8662082, 8964952, 10338614, 12326809, 14568047, 17324164, 20677228, 24653618, 29136094, 34648328, 41354456, 49307236, 58272188, 98614472, 116544376, 160248517, 320497034, 640994068, 1281988136]

約数ペア:

[(1, 1281988136), (2, 640994068), (4, 320497034), (8, 160248517), (11, 116544376), (13, 98614472), (22, 58272188), (26, 49307236), (31, 41354456), (37, 34648328), (44, 29136094), (52, 24653618), (62, 20677228), (74, 17324164), (88, 14568047), (104, 12326809), (124, 10338614), (143, 8964952), (148, 8662082), (248, 5169307), (286, 4482476), (296, 4331041), (341, 3759496), (403, 3181112), (407, 3149848), (481, 2665256), (572, 2241238), (682, 1879748), (806, 1590556), (814, 1574924), (962, 1332628), (977, 1312168), (1144, 1120619), (1147, 1117688), (1364, 939874), (1612, 795278), (1628, 787462), (1924, 666314), (1954, 656084), (2294, 558844), (2728, 469937), (3224, 397639), (3256, 393731), (3848, 333157), (3908, 328042), (4433, 289192), (4588, 279422), (5291, 242296), (7816, 164021), (8866, 144596), (9176, 139711), (10582, 121148), (10747, 119288), (12617, 101608), (12701, 100936), (14911, 85976), (17732, 72298), (21164, 60574), (21494, 59644), (25234, 50804), (25402, 50468), (29822, 42988), (30287, 42328), (35464, 36149)]