81316856

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{39551}}^1$

素因数の和:39814

約数の個数: 16

約数和(自身を含む): 153066240

約数和(自身を除く): 71749384

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 39551, 79102, 158204, 316408, 10164607, 20329214, 40658428, 81316856]

約数ペア:

[(1, 81316856), (2, 40658428), (4, 20329214), (8, 10164607), (257, 316408), (514, 158204), (1028, 79102), (2056, 39551)]