639065

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:93

約数の個数: 24

約数和(自身を含む): 953280

約数和(自身を除く): 314215

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 961, 1085, 2945, 4123, 4805, 6727, 18259, 20615, 33635, 91295, 127813, 639065]

約数ペア:

[(1, 639065), (5, 127813), (7, 91295), (19, 33635), (31, 20615), (35, 18259), (95, 6727), (133, 4805), (155, 4123), (217, 2945), (589, 1085), (665, 961)]