256331397

素因数分解:

$3^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{23887}}^1$

素因数の和:23977

約数の個数: 24

約数和(自身を含む): 403038336

約数和(自身を除く): 146706939

約数列:

[1, 3, 7, 21, 49, 73, 147, 219, 511, 1533, 3577, 10731, 23887, 71661, 167209, 501627, 1170463, 1743751, 3511389, 5231253, 12206257, 36618771, 85443799, 256331397]

約数ペア:

[(1, 256331397), (3, 85443799), (7, 36618771), (21, 12206257), (49, 5231253), (73, 3511389), (147, 1743751), (219, 1170463), (511, 501627), (1533, 167209), (3577, 71661), (10731, 23887)]