128819075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{66919}}^1$

素因数の和:66947

約数の個数: 24

約数和(自身を含む): 199153920

約数和(自身を除く): 70334845

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 66919, 334595, 468433, 736109, 1672975, 2342165, 3680545, 5152763, 11710825, 18402725, 25763815, 128819075]

約数ペア:

[(1, 128819075), (5, 25763815), (7, 18402725), (11, 11710825), (25, 5152763), (35, 3680545), (55, 2342165), (77, 1672975), (175, 736109), (275, 468433), (385, 334595), (1925, 66919)]