209964951

素因数分解:

$3^2\times 7^2\times {\mathrm{476111}}^1$

素因数の和:476131

約数の個数: 18

約数和(自身を含む): 352798992

約数和(自身を除く): 142834041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 476111, 1428333, 3332777, 4284999, 9998331, 23329439, 29994993, 69988317, 209964951]

約数ペア:

[(1, 209964951), (3, 69988317), (7, 29994993), (9, 23329439), (21, 9998331), (49, 4284999), (63, 3332777), (147, 1428333), (441, 476111)]