257110525

素因数分解:

$5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20693}}^1$

素因数の和:20781

約数の個数: 24

約数和(自身を含む): 369512064

約数和(自身を除く): 112401539

約数列:

[1, 5, 7, 25, 35, 71, 175, 355, 497, 1775, 2485, 12425, 20693, 103465, 144851, 517325, 724255, 1469203, 3621275, 7346015, 10284421, 36730075, 51422105, 257110525]

約数ペア:

[(1, 257110525), (5, 51422105), (7, 36730075), (25, 10284421), (35, 7346015), (71, 3621275), (175, 1469203), (355, 724255), (497, 517325), (1775, 144851), (2485, 103465), (12425, 20693)]