20409501

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{293}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 12104547

約数列:

[1, 3, 7, 21, 31, 93, 107, 217, 293, 321, 651, 749, 879, 2051, 2247, 3317, 6153, 9083, 9951, 23219, 27249, 31351, 63581, 69657, 94053, 190743, 219457, 658371, 971881, 2915643, 6803167, 20409501]

約数ペア:

[(1, 20409501), (3, 6803167), (7, 2915643), (21, 971881), (31, 658371), (93, 219457), (107, 190743), (217, 94053), (293, 69657), (321, 63581), (651, 31351), (749, 27249), (879, 23219), (2051, 9951), (2247, 9083), (3317, 6153)]