81120291

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{203309}}^1$

素因数の和:203338

約数の個数: 16

約数和(自身を含む): 130118400

約数和(自身を除く): 48998109

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 203309, 609927, 1423163, 3862871, 4269489, 11588613, 27040097, 81120291]

約数ペア:

[(1, 81120291), (3, 27040097), (7, 11588613), (19, 4269489), (21, 3862871), (57, 1423163), (133, 609927), (399, 203309)]