28279580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{201997}}^1$

素因数の和:202013

約数の個数: 24

約数和(自身を含む): 67871328

約数和(自身を除く): 39591748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 201997, 403994, 807988, 1009985, 1413979, 2019970, 2827958, 4039940, 5655916, 7069895, 14139790, 28279580]

約数ペア:

[(1, 28279580), (2, 14139790), (4, 7069895), (5, 5655916), (7, 4039940), (10, 2827958), (14, 2019970), (20, 1413979), (28, 1009985), (35, 807988), (70, 403994), (140, 201997)]