20406394

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{1097}}^1$

素因数の和:1301

約数の個数: 16

約数和(自身を含む): 31306176

約数和(自身を除く): 10899782

約数列:

[1, 2, 71, 131, 142, 262, 1097, 2194, 9301, 18602, 77887, 143707, 155774, 287414, 10203197, 20406394]

約数ペア:

[(1, 20406394), (2, 10203197), (71, 287414), (131, 155774), (142, 143707), (262, 77887), (1097, 18602), (2194, 9301)]