81278736

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{21991}}^1$

素因数の和:22020

約数の個数: 80

約数和(自身を含む): 261792768

約数和(自身を除く): 180514032

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 33, 42, 44, 48, 56, 66, 77, 84, 88, 112, 132, 154, 168, 176, 231, 264, 308, 336, 462, 528, 616, 924, 1232, 1848, 3696, 21991, 43982, 65973, 87964, 131946, 153937, 175928, 241901, 263892, 307874, 351856, 461811, 483802, 527784, 615748, 725703, 923622, 967604, 1055568, 1231496, 1451406, 1693307, 1847244, 1935208, 2462992, 2902812, 3386614, 3694488, 3870416, 5079921, 5805624, 6773228, 7388976, 10159842, 11611248, 13546456, 20319684, 27092912, 40639368, 81278736]

約数ペア:

[(1, 81278736), (2, 40639368), (3, 27092912), (4, 20319684), (6, 13546456), (7, 11611248), (8, 10159842), (11, 7388976), (12, 6773228), (14, 5805624), (16, 5079921), (21, 3870416), (22, 3694488), (24, 3386614), (28, 2902812), (33, 2462992), (42, 1935208), (44, 1847244), (48, 1693307), (56, 1451406), (66, 1231496), (77, 1055568), (84, 967604), (88, 923622), (112, 725703), (132, 615748), (154, 527784), (168, 483802), (176, 461811), (231, 351856), (264, 307874), (308, 263892), (336, 241901), (462, 175928), (528, 153937), (616, 131946), (924, 87964), (1232, 65973), (1848, 43982), (3696, 21991)]