257840642

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{81031}}^1$

素因数の和:81113

約数の個数: 16

約数和(自身を含む): 406456512

約数和(自身を除く): 148615870

約数列:

[1, 2, 37, 43, 74, 86, 1591, 3182, 81031, 162062, 2998147, 3484333, 5996294, 6968666, 128920321, 257840642]

約数ペア:

[(1, 257840642), (2, 128920321), (37, 6968666), (43, 5996294), (74, 3484333), (86, 2998147), (1591, 162062), (3182, 81031)]