81481918

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{487}}^1$

素因数の和:569

約数の個数: 64

約数和(自身を含む): 160220160

約数和(自身を除く): 78738242

約数列:

[1, 2, 7, 14, 17, 19, 34, 37, 38, 74, 119, 133, 238, 259, 266, 323, 487, 518, 629, 646, 703, 974, 1258, 1406, 2261, 3409, 4403, 4522, 4921, 6818, 8279, 8806, 9253, 9842, 11951, 16558, 18019, 18506, 23902, 36038, 57953, 64771, 83657, 115906, 126133, 129542, 157301, 167314, 252266, 306323, 314602, 342361, 612646, 684722, 1101107, 2144261, 2202214, 2396527, 4288522, 4793054, 5820137, 11640274, 40740959, 81481918]

約数ペア:

[(1, 81481918), (2, 40740959), (7, 11640274), (14, 5820137), (17, 4793054), (19, 4288522), (34, 2396527), (37, 2202214), (38, 2144261), (74, 1101107), (119, 684722), (133, 612646), (238, 342361), (259, 314602), (266, 306323), (323, 252266), (487, 167314), (518, 157301), (629, 129542), (646, 126133), (703, 115906), (974, 83657), (1258, 64771), (1406, 57953), (2261, 36038), (3409, 23902), (4403, 18506), (4522, 18019), (4921, 16558), (6818, 11951), (8279, 9842), (8806, 9253)]