66961780

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{13339}}^1$

素因数の和:13599

約数の個数: 24

約数和(自身を含む): 141190560

約数和(自身を除く): 74228780

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 13339, 26678, 53356, 66695, 133390, 266780, 3348089, 6696178, 13392356, 16740445, 33480890, 66961780]

約数ペア:

[(1, 66961780), (2, 33480890), (4, 16740445), (5, 13392356), (10, 6696178), (20, 3348089), (251, 266780), (502, 133390), (1004, 66695), (1255, 53356), (2510, 26678), (5020, 13339)]