81350668

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67567}}^1$

素因数の和:67621

約数の個数: 24

約数和(自身を含む): 166487552

約数和(自身を除く): 85136884

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 67567, 135134, 270268, 472969, 945938, 1891876, 2905381, 5810762, 11621524, 20337667, 40675334, 81350668]

約数ペア:

[(1, 81350668), (2, 40675334), (4, 20337667), (7, 11621524), (14, 5810762), (28, 2905381), (43, 1891876), (86, 945938), (172, 472969), (301, 270268), (602, 135134), (1204, 67567)]