257477290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{3678247}}^1$

素因数の和:3678261

約数の個数: 16

約数和(自身を含む): 529667712

約数和(自身を除く): 272190422

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 3678247, 7356494, 18391235, 25747729, 36782470, 51495458, 128738645, 257477290]

約数ペア:

[(1, 257477290), (2, 128738645), (5, 51495458), (7, 36782470), (10, 25747729), (14, 18391235), (35, 7356494), (70, 3678247)]