256436721

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{521}}^1\times {\mathrm{3217}}^1$

素因数の和:3761

約数の個数: 24

約数和(自身を含む): 393072264

約数和(自身を除く): 136635543

約数列:

[1, 3, 9, 17, 51, 153, 521, 1563, 3217, 4689, 8857, 9651, 26571, 28953, 54689, 79713, 164067, 492201, 1676057, 5028171, 15084513, 28492969, 85478907, 256436721]

約数ペア:

[(1, 256436721), (3, 85478907), (9, 28492969), (17, 15084513), (51, 5028171), (153, 1676057), (521, 492201), (1563, 164067), (3217, 79713), (4689, 54689), (8857, 28953), (9651, 26571)]