19775133

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4421}}^1$

素因数の和:4505

約数の個数: 24

約数和(自身を含む): 33111936

約数和(自身を除く): 13336803

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4421, 4473, 13263, 30947, 39789, 92841, 278523, 313891, 941673, 2197237, 2825019, 6591711, 19775133]

約数ペア:

[(1, 19775133), (3, 6591711), (7, 2825019), (9, 2197237), (21, 941673), (63, 313891), (71, 278523), (213, 92841), (497, 39789), (639, 30947), (1491, 13263), (4421, 4473)]