278749887

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{167}}^1\times {\mathrm{337}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 407027712

約数和(自身を除く): 128277825

約数列:

[1, 3, 13, 39, 127, 167, 337, 381, 501, 1011, 1651, 2171, 4381, 4953, 6513, 13143, 21209, 42799, 56279, 63627, 128397, 168837, 275717, 556387, 731627, 827151, 1669161, 2194881, 7147433, 21442299, 92916629, 278749887]

約数ペア:

[(1, 278749887), (3, 92916629), (13, 21442299), (39, 7147433), (127, 2194881), (167, 1669161), (337, 827151), (381, 731627), (501, 556387), (1011, 275717), (1651, 168837), (2171, 128397), (4381, 63627), (4953, 56279), (6513, 42799), (13143, 21209)]