257401695

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{135119}}^1$

素因数の和:135254

約数の個数: 16

約数和(自身を含む): 415088640

約数和(自身を除く): 157686945

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 135119, 405357, 675595, 2026785, 17160113, 51480339, 85800565, 257401695]

約数ペア:

[(1, 257401695), (3, 85800565), (5, 51480339), (15, 17160113), (127, 2026785), (381, 675595), (635, 405357), (1905, 135119)]