19628425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 36

約数和(自身を含む): 27089040

約数和(自身を除く): 7460615

約数列:

[1, 5, 19, 25, 31, 43, 95, 155, 215, 475, 589, 775, 817, 961, 1075, 1333, 2945, 4085, 4805, 6665, 14725, 18259, 20425, 24025, 25327, 33325, 41323, 91295, 126635, 206615, 456475, 633175, 785137, 1033075, 3925685, 19628425]

約数ペア:

[(1, 19628425), (5, 3925685), (19, 1033075), (25, 785137), (31, 633175), (43, 456475), (95, 206615), (155, 126635), (215, 91295), (475, 41323), (589, 33325), (775, 25327), (817, 24025), (961, 20425), (1075, 18259), (1333, 14725), (2945, 6665), (4085, 4805)]