28306255

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 36176976

約数和(自身を除く): 7870721

約数列:

[1, 5, 31, 43, 137, 155, 215, 685, 961, 1333, 4247, 4805, 5891, 6665, 21235, 29455, 41323, 131657, 182621, 206615, 658285, 913105, 5661251, 28306255]

約数ペア:

[(1, 28306255), (5, 5661251), (31, 913105), (43, 658285), (137, 206615), (155, 182621), (215, 131657), (685, 41323), (961, 29455), (1333, 21235), (4247, 6665), (4805, 5891)]