257282145

素因数分解:

$3^2\times 5^1\times {\mathrm{823}}^1\times {\mathrm{6947}}^1$

素因数の和:7781

約数の個数: 24

約数和(自身を含む): 446561856

約数和(自身を除く): 189279711

約数列:

[1, 3, 5, 9, 15, 45, 823, 2469, 4115, 6947, 7407, 12345, 20841, 34735, 37035, 62523, 104205, 312615, 5717381, 17152143, 28586905, 51456429, 85760715, 257282145]

約数ペア:

[(1, 257282145), (3, 85760715), (5, 51456429), (9, 28586905), (15, 17152143), (45, 5717381), (823, 312615), (2469, 104205), (4115, 62523), (6947, 37035), (7407, 34735), (12345, 20841)]