20487628

素因数分解:

$2^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{1789}}^1$

素因数の和:2209

約数の個数: 24

約数和(自身を含む): 41098400

約数和(自身を除く): 20610772

約数列:

[1, 2, 4, 7, 14, 28, 409, 818, 1636, 1789, 2863, 3578, 5726, 7156, 11452, 12523, 25046, 50092, 731701, 1463402, 2926804, 5121907, 10243814, 20487628]

約数ペア:

[(1, 20487628), (2, 10243814), (4, 5121907), (7, 2926804), (14, 1463402), (28, 731701), (409, 50092), (818, 25046), (1636, 12523), (1789, 11452), (2863, 7156), (3578, 5726)]