257942715

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{135403}}^1$

素因数の和:135538

約数の個数: 16

約数和(自身を含む): 415961088

約数和(自身を除く): 158018373

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 135403, 406209, 677015, 2031045, 17196181, 51588543, 85980905, 257942715]

約数ペア:

[(1, 257942715), (3, 85980905), (5, 51588543), (15, 17196181), (127, 2031045), (381, 677015), (635, 406209), (1905, 135403)]