256265065

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{401}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 383218560

約数和(自身を除く): 126953495

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 401, 589, 665, 961, 1085, 2005, 2807, 2945, 4123, 4805, 6727, 7619, 12431, 14035, 18259, 20615, 33635, 38095, 53333, 62155, 87017, 91295, 127813, 236189, 266665, 385361, 435085, 639065, 1180945, 1653323, 1926805, 2697527, 7321859, 8266615, 13487635, 36609295, 51253013, 256265065]

約数ペア:

[(1, 256265065), (5, 51253013), (7, 36609295), (19, 13487635), (31, 8266615), (35, 7321859), (95, 2697527), (133, 1926805), (155, 1653323), (217, 1180945), (401, 639065), (589, 435085), (665, 385361), (961, 266665), (1085, 236189), (2005, 127813), (2807, 91295), (2945, 87017), (4123, 62155), (4805, 53333), (6727, 38095), (7619, 33635), (12431, 20615), (14035, 18259)]