87312155

素因数分解:

$5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 122411520

約数和(自身を除く): 35099365

約数列:

[1, 5, 7, 35, 131, 137, 139, 655, 685, 695, 917, 959, 973, 4585, 4795, 4865, 17947, 18209, 19043, 89735, 91045, 95215, 125629, 127463, 133301, 628145, 637315, 666505, 2494633, 12473165, 17462431, 87312155]

約数ペア:

[(1, 87312155), (5, 17462431), (7, 12473165), (35, 2494633), (131, 666505), (137, 637315), (139, 628145), (655, 133301), (685, 127463), (695, 125629), (917, 95215), (959, 91045), (973, 89735), (4585, 19043), (4795, 18209), (4865, 17947)]