257904087

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{261301}}^1$

素因数の和:261358

約数の個数: 16

約数和(自身を含む): 401359872

約数和(自身を除く): 143455785

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 261301, 783903, 1829107, 5487321, 12281147, 36843441, 85968029, 257904087]

約数ペア:

[(1, 257904087), (3, 85968029), (7, 36843441), (21, 12281147), (47, 5487321), (141, 1829107), (329, 783903), (987, 261301)]