1989155

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:395

約数の個数: 24

約数和(自身を含む): 2905632

約数和(自身を除く): 916477

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 353, 805, 1127, 1765, 2471, 5635, 8119, 12355, 17297, 40595, 56833, 86485, 284165, 397831, 1989155]

約数ペア:

[(1, 1989155), (5, 397831), (7, 284165), (23, 86485), (35, 56833), (49, 40595), (115, 17297), (161, 12355), (245, 8119), (353, 5635), (805, 2471), (1127, 1765)]