256993281

素因数分解:

$3^2\times {\mathrm{401}}^1\times {\mathrm{71209}}^1$

素因数の和:71616

約数の個数: 12

約数和(自身を含む): 372143460

約数和(自身を除く): 115150179

約数列:

[1, 3, 9, 401, 1203, 3609, 71209, 213627, 640881, 28554809, 85664427, 256993281]

約数ペア:

[(1, 256993281), (3, 85664427), (9, 28554809), (401, 640881), (1203, 213627), (3609, 71209)]