12985119

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2903}}^1$

素因数の和:2987

約数の個数: 24

約数和(自身を含む): 21745152

約数和(自身を除く): 8760033

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 2903, 4473, 8709, 20321, 26127, 60963, 182889, 206113, 618339, 1442791, 1855017, 4328373, 12985119]

約数ペア:

[(1, 12985119), (3, 4328373), (7, 1855017), (9, 1442791), (21, 618339), (63, 206113), (71, 182889), (213, 60963), (497, 26127), (639, 20321), (1491, 8709), (2903, 4473)]