667790960

素因数分解:

$2^4\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{4201}}^1$

素因数の和:6201

約数の個数: 40

約数和(自身を含む): 1553765136

約数和(自身を除く): 885974176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1987, 3974, 4201, 7948, 8402, 9935, 15896, 16804, 19870, 21005, 31792, 33608, 39740, 42010, 67216, 79480, 84020, 158960, 168040, 336080, 8347387, 16694774, 33389548, 41736935, 66779096, 83473870, 133558192, 166947740, 333895480, 667790960]

約数ペア:

[(1, 667790960), (2, 333895480), (4, 166947740), (5, 133558192), (8, 83473870), (10, 66779096), (16, 41736935), (20, 33389548), (40, 16694774), (80, 8347387), (1987, 336080), (3974, 168040), (4201, 158960), (7948, 84020), (8402, 79480), (9935, 67216), (15896, 42010), (16804, 39740), (19870, 33608), (21005, 31792)]