257293729

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{7937}}^1$

素因数の和:8376

約数の個数: 16

約数和(自身を含む): 321584256

約数和(自身を除く): 64290527

約数列:

[1, 7, 11, 77, 421, 2947, 4631, 7937, 32417, 55559, 87307, 611149, 3341477, 23390339, 36756247, 257293729]

約数ペア:

[(1, 257293729), (7, 36756247), (11, 23390339), (77, 3341477), (421, 611149), (2947, 87307), (4631, 55559), (7937, 32417)]