257412856

素因数分解:

$2^3\times {\mathrm{1553}}^1\times {\mathrm{20719}}^1$

素因数の和:22278

約数の個数: 16

約数和(自身を含む): 482983200

約数和(自身を除く): 225570344

約数列:

[1, 2, 4, 8, 1553, 3106, 6212, 12424, 20719, 41438, 82876, 165752, 32176607, 64353214, 128706428, 257412856]

約数ペア:

[(1, 257412856), (2, 128706428), (4, 64353214), (8, 32176607), (1553, 165752), (3106, 82876), (6212, 41438), (12424, 20719)]