257788295

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{251}}^1\times {\mathrm{569}}^1$

素因数の和:863

約数の個数: 24

約数和(自身を含む): 328361040

約数和(自身を除く): 70572745

約数列:

[1, 5, 19, 95, 251, 361, 569, 1255, 1805, 2845, 4769, 10811, 23845, 54055, 90611, 142819, 205409, 453055, 714095, 1027045, 2713561, 13567805, 51557659, 257788295]

約数ペア:

[(1, 257788295), (5, 51557659), (19, 13567805), (95, 2713561), (251, 1027045), (361, 714095), (569, 453055), (1255, 205409), (1805, 142819), (2845, 90611), (4769, 54055), (10811, 23845)]