12820689

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1867}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 21369920

約数和(自身を除く): 8549231

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 1867, 2289, 5601, 6867, 13069, 16803, 39207, 117621, 203503, 610509, 1424521, 1831527, 4273563, 12820689]

約数ペア:

[(1, 12820689), (3, 4273563), (7, 1831527), (9, 1424521), (21, 610509), (63, 203503), (109, 117621), (327, 39207), (763, 16803), (981, 13069), (1867, 6867), (2289, 5601)]