2891007

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 4827680

約数和(自身を除く): 1936673

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 421, 763, 981, 1263, 2289, 2947, 3789, 6867, 8841, 26523, 45889, 137667, 321223, 413001, 963669, 2891007]

約数ペア:

[(1, 2891007), (3, 963669), (7, 413001), (9, 321223), (21, 137667), (63, 45889), (109, 26523), (327, 8841), (421, 6867), (763, 3789), (981, 2947), (1263, 2289)]