19885538

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{1069}}^1$

素因数の和:1273

約数の個数: 16

約数和(自身を含む): 30507840

約数和(自身を除く): 10622302

約数列:

[1, 2, 71, 131, 142, 262, 1069, 2138, 9301, 18602, 75899, 140039, 151798, 280078, 9942769, 19885538]

約数ペア:

[(1, 19885538), (2, 9942769), (71, 280078), (131, 151798), (142, 140039), (262, 75899), (1069, 18602), (2138, 9301)]