18987578

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{1069}}^1$

素因数の和:1261

約数の個数: 16

約数和(自身を含む): 29121120

約数和(自身を除く): 10133542

約数列:

[1, 2, 83, 107, 166, 214, 1069, 2138, 8881, 17762, 88727, 114383, 177454, 228766, 9493789, 18987578]

約数ペア:

[(1, 18987578), (2, 9493789), (83, 228766), (107, 177454), (166, 114383), (214, 88727), (1069, 17762), (2138, 8881)]