20321768

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{19391}}^1$

素因数の和:19528

約数の個数: 16

約数和(自身を含む): 38396160

約数和(自身を除く): 18074392

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 19391, 38782, 77564, 155128, 2540221, 5080442, 10160884, 20321768]

約数ペア:

[(1, 20321768), (2, 10160884), (4, 5080442), (8, 2540221), (131, 155128), (262, 77564), (524, 38782), (1048, 19391)]