7981105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{151}}^1$

素因数の和:229

約数の個数: 24

約数和(自身を含む): 10867392

約数和(自身を除く): 2886287

約数列:

[1, 5, 11, 31, 55, 151, 155, 341, 755, 961, 1661, 1705, 4681, 4805, 8305, 10571, 23405, 51491, 52855, 145111, 257455, 725555, 1596221, 7981105]

約数ペア:

[(1, 7981105), (5, 1596221), (11, 725555), (31, 257455), (55, 145111), (151, 52855), (155, 51491), (341, 23405), (755, 10571), (961, 8305), (1661, 4805), (1705, 4681)]