81564

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{971}}^1$

素因数の和:985

約数の個数: 24

約数和(自身を含む): 217728

約数和(自身を除く): 136164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 971, 1942, 2913, 3884, 5826, 6797, 11652, 13594, 20391, 27188, 40782, 81564]

約数ペア:

[(1, 81564), (2, 40782), (3, 27188), (4, 20391), (6, 13594), (7, 11652), (12, 6797), (14, 5826), (21, 3884), (28, 2913), (42, 1942), (84, 971)]