78840459

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{13709}}^1$

素因数の和:13792

約数の個数: 20

約数和(自身を含む): 119441520

約数和(自身を除く): 40601061

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 13709, 41127, 123381, 370143, 973339, 1110429, 2920017, 8760051, 26280153, 78840459]

約数ペア:

[(1, 78840459), (3, 26280153), (9, 8760051), (27, 2920017), (71, 1110429), (81, 973339), (213, 370143), (639, 123381), (1917, 41127), (5751, 13709)]